4040631 has 16 divisors (see below), whose sum is σ = 6841600. Its totient is φ = 2308824.

The previous prime is 4040629. The next prime is 4040653. The reversal of 4040631 is 1360404.

It is not a de Polignac number, because 4040631 - 2¹ = 4040629 is a prime.

It is a super-2 number, since 2×4040631² = 32653397756322, 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 (4040431) 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, 10501 + ... + 10878.

It is an arithmetic number, because the mean of its divisors is an integer number (427600).

Almost surely, 2^4040631 is an apocalyptic number.

4040631 is a deficient number, since it is larger than the sum of its proper divisors (2800969).

4040631 is a wasteful number, since it uses less digits than its factorization.

4040631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21395 (or 21389 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 4040631 is about 2010.1320852123. The cubic root of 4040631 is about 159.2757763004.

The spelling of 4040631 in words is "four million, forty thousand, six hundred thirty-one".