404121604 has 24 divisors (see below), whose sum is σ = 729445248. Its totient is φ = 195794400.

The previous prime is 404121589. The next prime is 404121607. The reversal of 404121604 is 406121404.

It is not an unprimeable number, because it can be changed into a prime (404121607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8347 + ... + 29629.

It is an arithmetic number, because the mean of its divisors is an integer number (30393552).

Almost surely, 2^404121604 is an apocalyptic number.

It is an amenable number.

404121604 is a deficient number, since it is larger than the sum of its proper divisors (325323644).

404121604 is a wasteful number, since it uses less digits than its factorization.

404121604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21435 (or 21433 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 404121604 is about 20102.7760272058. The cubic root of 404121604 is about 739.3283435667.

The spelling of 404121604 in words is "four hundred four million, one hundred twenty-one thousand, six hundred four".