404421604 has 12 divisors (see below), whose sum is σ = 738509184. Its totient is φ = 193418984.

The previous prime is 404421541. The next prime is 404421623. The reversal of 404421604 is 406124404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2197852 + ... + 2198035.

It is an arithmetic number, because the mean of its divisors is an integer number (61542432).

Almost surely, 2^404421604 is an apocalyptic number.

It is an amenable number.

404421604 is a deficient number, since it is larger than the sum of its proper divisors (334087580).

404421604 is a wasteful number, since it uses less digits than its factorization.

404421604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4395914 (or 4395912 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 404421604 is about 20110.2362989598. The cubic root of 404421604 is about 739.5112453133.

The spelling of 404421604 in words is "four hundred four million, four hundred twenty-one thousand, six hundred four".