3931457 has 2 divisors, whose sum is σ = 3931458. Its totient is φ = 3931456.

The previous prime is 3931439. The next prime is 3931463. The reversal of 3931457 is 7541393.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3418801 + 512656 = 1849^2 + 716^2 .

It is a cyclic number.

It is not a de Polignac number, because 3931457 - 2⁶ = 3931393 is a prime.

It is not a weakly prime, because it can be changed into another prime (3931357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1965728 + 1965729.

It is an arithmetic number, because the mean of its divisors is an integer number (1965729).

Almost surely, 2^3931457 is an apocalyptic number.

It is an amenable number.

3931457 is a deficient number, since it is larger than the sum of its proper divisors (1).

3931457 is an equidigital number, since it uses as much as digits as its factorization.

3931457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 32.

The square root of 3931457 is about 1982.7902057454. The cubic root of 3931457 is about 157.8281660166.

The spelling of 3931457 in words is "three million, nine hundred thirty-one thousand, four hundred fifty-seven".