40404631 has 16 divisors (see below), whose sum is σ = 44461440. Its totient is φ = 36564480.

The previous prime is 40404613. The next prime is 40404641. The reversal of 40404631 is 13640404.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40404631 is a prime.

It is a super-2 number, since 2×40404631² = 3265068412492322, 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 (40404641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48325 + ... + 49153.

It is an arithmetic number, because the mean of its divisors is an integer number (2778840).

Almost surely, 2^40404631 is an apocalyptic number.

40404631 is a deficient number, since it is larger than the sum of its proper divisors (4056809).

40404631 is a wasteful number, since it uses less digits than its factorization.

40404631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 40404631 is about 6356.4637181376. The cubic root of 40404631 is about 343.1445047268.

The spelling of 40404631 in words is "forty million, four hundred four thousand, six hundred thirty-one".