900138904 has 16 divisors (see below), whose sum is σ = 1928869200. Its totient is φ = 385773792.

The previous prime is 900138857. The next prime is 900138929. The reversal of 900138904 is 409831009.

900138904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 900138904.

It is a congruent number.

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, 8036899 + ... + 8037010.

It is an arithmetic number, because the mean of its divisors is an integer number (120554325).

Almost surely, 2^900138904 is an apocalyptic number.

It is an amenable number.

900138904 is an abundant number, since it is smaller than the sum of its proper divisors (1028730296).

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

900138904 is a wasteful number, since it uses less digits than its factorization.

900138904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16073922 (or 16073918 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 900138904 is about 30002.3149773480. The cubic root of 900138904 is about 965.5390525459.

The spelling of 900138904 in words is "nine hundred million, one hundred thirty-eight thousand, nine hundred four".