40402344 has 32 divisors (see below), whose sum is σ = 101956320. Its totient is φ = 13340736.

The previous prime is 40402333. The next prime is 40402357. The reversal of 40402344 is 44320404.

40402344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 40402344.

It is an unprimeable number.

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, 5299 + ... + 10434.

It is an arithmetic number, because the mean of its divisors is an integer number (3186135).

Almost surely, 2^40402344 is an apocalyptic number.

It is an amenable number.

40402344 is an abundant number, since it is smaller than the sum of its proper divisors (61553976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40402344 is a wasteful number, since it uses less digits than its factorization.

40402344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15849 (or 15845 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 40402344 is about 6356.2838199690. The cubic root of 40402344 is about 343.1380303345.

Adding to 40402344 its reverse (44320404), we get a palindrome (84722748).

The spelling of 40402344 in words is "forty million, four hundred two thousand, three hundred forty-four".