404039964 has 12 divisors (see below), whose sum is σ = 942759944. Its totient is φ = 134679984.

The previous prime is 404039939. The next prime is 404039983. The reversal of 404039964 is 469930404.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16834987 + ... + 16835010.

Almost surely, 2^404039964 is an apocalyptic number.

It is an amenable number.

404039964 is an abundant number, since it is smaller than the sum of its proper divisors (538719980).

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

404039964 is a wasteful number, since it uses less digits than its factorization.

404039964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33670004 (or 33670002 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 404039964 is about 20100.7453593144. The cubic root of 404039964 is about 739.2785542373.

The spelling of 404039964 in words is "four hundred four million, thirty-nine thousand, nine hundred sixty-four".