3964631 has 4 divisors (see below), whose sum is σ = 4325064. Its totient is φ = 3604200.

The previous prime is 3964627. The next prime is 3964633. The reversal of 3964631 is 1364693.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3964631 - 2² = 3964627 is a prime.

It is a super-2 number, since 2×3964631² = 31436597932322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3964633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180200 + ... + 180221.

It is an arithmetic number, because the mean of its divisors is an integer number (1081266).

Almost surely, 2^3964631 is an apocalyptic number.

3964631 is a deficient number, since it is larger than the sum of its proper divisors (360433).

3964631 is a wasteful number, since it uses less digits than its factorization.

3964631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360432.

The product of its digits is 11664, while the sum is 32.

The square root of 3964631 is about 1991.1381167563. The cubic root of 3964631 is about 158.2708461333.

The spelling of 3964631 in words is "three million, nine hundred sixty-four thousand, six hundred thirty-one".