402404344 has 16 divisors (see below), whose sum is σ = 794219400. Its totient is φ = 190612512.

The previous prime is 402404311. The next prime is 402404371. The reversal of 402404344 is 443404204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1323547 + ... + 1323850.

Almost surely, 2^402404344 is an apocalyptic number.

It is an amenable number.

402404344 is a deficient number, since it is larger than the sum of its proper divisors (391815056).

402404344 is a wasteful number, since it uses less digits than its factorization.

402404344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2647422 (or 2647418 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 402404344 is about 20060.0185443583. The cubic root of 402404344 is about 738.2796315006.

Adding to 402404344 its reverse (443404204), we get a palindrome (845808548).

The spelling of 402404344 in words is "four hundred two million, four hundred four thousand, three hundred forty-four".