3947401 has 2 divisors, whose sum is σ = 3947402. Its totient is φ = 3947400.

The previous prime is 3947369. The next prime is 3947407. The reversal of 3947401 is 1047493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2449225 + 1498176 = 1565^2 + 1224^2 .

It is a cyclic number.

It is not a de Polignac number, because 3947401 - 2⁵ = 3947369 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3947401.

It is not a weakly prime, because it can be changed into another prime (3947407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1973700 + 1973701.

It is an arithmetic number, because the mean of its divisors is an integer number (1973701).

Almost surely, 2^3947401 is an apocalyptic number.

It is an amenable number.

3947401 is a deficient number, since it is larger than the sum of its proper divisors (1).

3947401 is an equidigital number, since it uses as much as digits as its factorization.

3947401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 3947401 is about 1986.8067344359. The cubic root of 3947401 is about 158.0412352984.

The spelling of 3947401 in words is "three million, nine hundred forty-seven thousand, four hundred one".