N = int(input())
P = 10 ** 9 + 7

C = 10 ** 5 + 10
fact = [1] * C
fact_inv = [1] * C
for i in range(2,C):
    fact[i] = fact[i-1] * i % P
fact_inv[-1] = pow(fact[-1],P-2,P)
for i in range(C-2,1,-1):
    fact_inv[i] = fact_inv[i+1] * (i + 1) % P
ans = 0
for i in range(1,N+1):
    c = fact[N] * fact_inv[i] % P * fact_inv[N-i] % P * pow(i,N-i,P) % P
    ans = (ans + c) % P
print(ans)