40396231 has 8 divisors (see below), whose sum is σ = 41274144. Its totient is φ = 39527040.

The previous prime is 40396219. The next prime is 40396253. The reversal of 40396231 is 13269304.

40396231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40396231 is a prime.

It is a super-2 number, since 2×40396231² = 3263710958010722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40396231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40396271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7651 + ... + 11803.

It is an arithmetic number, because the mean of its divisors is an integer number (5159268).

Almost surely, 2^40396231 is an apocalyptic number.

40396231 is a deficient number, since it is larger than the sum of its proper divisors (877913).

40396231 is a wasteful number, since it uses less digits than its factorization.

40396231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4361.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 40396231 is about 6355.8029390471. The cubic root of 40396231 is about 343.1207235121.

The spelling of 40396231 in words is "forty million, three hundred ninety-six thousand, two hundred thirty-one".