990000204 has 12 divisors (see below), whose sum is σ = 2310000504. Its totient is φ = 330000064.

The previous prime is 990000163. The next prime is 990000217. The reversal of 990000204 is 402000099.

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

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, 41249997 + ... + 41250020.

It is an arithmetic number, because the mean of its divisors is an integer number (192500042).

Almost surely, 2^990000204 is an apocalyptic number.

It is an amenable number.

990000204 is an abundant number, since it is smaller than the sum of its proper divisors (1320000300).

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

990000204 is a wasteful number, since it uses less digits than its factorization.

990000204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82500024 (or 82500022 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 990000204 is about 31464.2686868772. The cubic root of 990000204 is about 996.6555618697.

The spelling of 990000204 in words is "nine hundred ninety million, two hundred four", and thus it is an aban number.