3940531 has 12 divisors (see below), whose sum is σ = 4625208. Its totient is φ = 3347232.

The previous prime is 3940523. The next prime is 3940553. The reversal of 3940531 is 1350493.

It is not a de Polignac number, because 3940531 - 2³ = 3940523 is a prime.

It is a super-2 number, since 2×3940531² = 31055569123922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3940496 and 3940505.

It is not an unprimeable number, because it can be changed into a prime (3940561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6420 + ... + 7006.

It is an arithmetic number, because the mean of its divisors is an integer number (385434).

Almost surely, 2^3940531 is an apocalyptic number.

3940531 is a deficient number, since it is larger than the sum of its proper divisors (684677).

3940531 is a wasteful number, since it uses less digits than its factorization.

3940531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738 (or 731 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 3940531 is about 1985.0770765892. The cubic root of 3940531 is about 157.9494978263.

The spelling of 3940531 in words is "three million, nine hundred forty thousand, five hundred thirty-one".