#include<bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef double db;
const int N = 1e7 + 5;
const int mod = 998244353;
//#define int long long

using i64 = int64_t;
std::bitset<N> bt[N];
i64 fpow(i64 x, i64 r)
{
    i64 result = 1;
    while (r)
    {
        if (r & 1)result = result * x % mod;
        r >>= 1;
        x = x * x % mod;
    }
    return result;
}
namespace binom {
    i64 fac[N], ifac[N];
    int __ = []
    {
        fac[0] = 1;
        for (int i = 1; i <= N - 5; i++)
            fac[i] = fac[i - 1] * i % mod;
        ifac[N - 5] = fpow(fac[N - 5], mod - 2);
        for (int i = N - 5; i; i--)
            ifac[i - 1] = ifac[i] * i % mod;
        return 0;
    }();

    inline i64 C(int n, int m)
    {
        if (n < m || m < 0)return 0;
        return fac[n] * ifac[m] % mod * ifac[n - m] % mod;
    }

    inline i64 A(int n, int m)
    {
        if (n < m || m < 0)return 0;
        return fac[n] * ifac[n - m] % mod;
    }
}
using namespace binom;

void solve() {
    ll n;
    cin>>n;
    ll ans=0;
    ll tmp=1;
    for(int i=1;i<=n-1;i++) tmp=tmp*i%mod;
    ll tt=tmp;
    for(int i=1;i<=n;i++){
        ans=ans+A(n-i,i-1)*tt%mod;
        ans%=mod;
        tt=tt*fpow(n-i,mod-2)%mod;
    }
    cout<<ans<<'\n';
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
//    cout << fixed << setprecision(1);
    int T = 1;
//    cin >> T;
    while (T--) solve();
    return 0;
}