40838631 has 8 divisors (see below), whose sum is σ = 54503424. Its totient is φ = 27199800.

The previous prime is 40838627. The next prime is 40838653. The reversal of 40838631 is 13683804.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40838631 - 2² = 40838627 is a prime.

It is a super-2 number, since 2×40838631² = 3335587563908322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40838592 and 40838601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40838431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2461 + ... + 9366.

It is an arithmetic number, because the mean of its divisors is an integer number (6812928).

Almost surely, 2^40838631 is an apocalyptic number.

40838631 is a deficient number, since it is larger than the sum of its proper divisors (13664793).

40838631 is a wasteful number, since it uses less digits than its factorization.

40838631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12981.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 40838631 is about 6390.5110124309. The cubic root of 40838631 is about 344.3687427539.

The spelling of 40838631 in words is "forty million, eight hundred thirty-eight thousand, six hundred thirty-one".