#pragma GCC optimize ("O3")
#pragma GCC target ("avx")
#include "bits/stdc++.h" // define macro "/D__MAI"

using namespace std;
typedef long long int ll;

#define xprintf(fmt,...) fprintf(stderr,fmt,__VA_ARGS__)
#define debugv(v) {printf("L%d %s > ",__LINE__,#v);for(auto e:v){cout<<e<<" ";}cout<<endl;}
#define debuga(m,w) {printf("L%d %s > ",__LINE__,#m);for(int x=0;x<(w);x++){cout<<(m)[x]<<" ";}cout<<endl;}
#define debugaa(m,h,w) {printf("L%d %s >\n",__LINE__,#m);for(int y=0;y<(h);y++){for(int x=0;x<(w);x++){cout<<(m)[y][x]<<" ";}cout<<endl;}}
#define ALL(v) (v).begin(),(v).end()
#define repeat(cnt,l) for(auto cnt=0ll;(cnt)<(l);++(cnt))
#define iterate(cnt,b,e) for(auto cnt=(b);(cnt)!=(e);++(cnt))
#define MD 1000000007ll
#define PI 3.1415926535897932384626433832795
#define EPS 1e-12
template<typename T1, typename T2> ostream& operator <<(ostream &o, const pair<T1, T2> p) { o << "(" << p.first << ":" << p.second << ")"; return o; }
template<typename iterator> inline size_t argmin(iterator begin, iterator end) { return distance(begin, min_element(begin, end)); }
template<typename iterator> inline size_t argmax(iterator begin, iterator end) { return distance(begin, max_element(begin, end)); }
template<typename T> T& maxset(T& to, const T& val) { return to = max(to, val); }
template<typename T> T& minset(T& to, const T& val) { return to = min(to, val); }

mt19937_64 randdev(8901016);
inline ll rand_range(ll l, ll h) {
    return uniform_int_distribution<ll>(l, h)(randdev);
}

#ifdef __MAI
#define getchar_unlocked getchar
#define putchar_unlocked putchar
#endif
#ifdef __VSCC
#define getchar_unlocked _getchar_nolock
#define putchar_unlocked _putchar_nolock
#endif
namespace {
#define isvisiblechar(c) (0x21<=(c)&&(c)<=0x7E)
    class MaiScanner {
    public:
        template<typename T> void input_integer(T& var) {
            var = 0;
            T sign = 1;
            int cc = getchar_unlocked();
            for (; cc<'0' || '9'<cc; cc = getchar_unlocked())
                if (cc == '-') sign = -1;
            for (; '0' <= cc&&cc <= '9'; cc = getchar_unlocked())
                var = (var << 3) + (var << 1) + cc - '0';
            var = var*sign;
        }
        inline int c() { return getchar_unlocked(); }
        inline MaiScanner& operator>>(int& var) {
            input_integer<int>(var);
            return *this;
        }
        inline MaiScanner& operator>>(long long& var) {
            input_integer<long long>(var);
            return *this;
        }
        inline MaiScanner& operator>>(string& var) {
            int cc = getchar_unlocked();
            for (; !isvisiblechar(cc); cc = getchar_unlocked());
            for (; isvisiblechar(cc); cc = getchar_unlocked())
                var.push_back(cc);
            return *this;
        }
        template<typename IT> void in(IT begin, IT end) {
            for (auto it = begin; it != end; ++it) *this >> *it;
        }
    };
}
MaiScanner scanner;


// power
// x^p 対数mod
// MEMO : 逆元...powm(n,E107-2,E107)
template<typename T>
T powm(T x, T p, T mod = 1000000007ll) {
    T y = 1;
    x = x%mod;
    while (0<p) {
        if (p % 2 == 1) {
            y = (y*x) % mod;
        }
        x = (x*x) % mod;
        p /= 2;
    }
    return y;
}


template<typename T>
T combim(T n, T r, T mod = 1000000007ll) {
    if (n / 2 < r) return combim(n, n - r);
    T p = 1;
    for (; 0<r; r--)
        p = (((p*(n - r + 1)) % mod)*powm(r, mod - 2)) % mod;
    return p;
}




ll m, n, kei;


ll cbm[100010];


int main() {

    scanner >> n;

    {
        // create combination table
        ll p = 1;
        cbm[0] = 1;
        for (ll r=1; r<=n; ++r)
            p = cbm[r] = (((p*(n - r + 1)) % MD)*powm(r, MD - 2)) % MD;
    }

    // とある集合Sを選ぶ．
    // x in S  : a[x] = x
    // y in ~S : a[y] = t : t in S

    // これを数え上げれば良さそう．
    // |S| ごとに数え上げられそう

    // あるSを考えると，
    // |S| ** (N - |S|)
    // これが，|S|の combination(N, |S|) 個ある

    ll ans = 0;

    iterate(c, 1ll, n + 1) {
        ans += powm(c, n - c)*cbm[c];
        ans %= MD;
    }

    cout << ans << endl;


    return 0;
}