404407904 has 24 divisors (see below), whose sum is σ = 800232048. Its totient is φ = 201174400.

The previous prime is 404407877. The next prime is 404407921. The reversal of 404407904 is 409704404.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 25772 + ... + 38379.

It is an arithmetic number, because the mean of its divisors is an integer number (33343002).

Almost surely, 2^404407904 is an apocalyptic number.

It is an amenable number.

404407904 is a deficient number, since it is larger than the sum of its proper divisors (395824144).

404407904 is a wasteful number, since it uses less digits than its factorization.

404407904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64358 (or 64350 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 404407904 is about 20109.8956735235. The cubic root of 404407904 is about 739.5028947715.

The spelling of 404407904 in words is "four hundred four million, four hundred seven thousand, nine hundred four".