398870900 has 36 divisors (see below), whose sum is σ = 877756320. Its totient is φ = 157298400.

The previous prime is 398870869. The next prime is 398870911. The reversal of 398870900 is 9078893.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20990 + ... + 35189.

It is an arithmetic number, because the mean of its divisors is an integer number (24382120).

Almost surely, 2^398870900 is an apocalyptic number.

It is an amenable number.

398870900 is an abundant number, since it is smaller than the sum of its proper divisors (478885420).

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

398870900 is a wasteful number, since it uses less digits than its factorization.

398870900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56264 (or 56257 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 398870900 is about 19971.7525520421. The cubic root of 398870900 is about 736.1123730632.

The spelling of 398870900 in words is "three hundred ninety-eight million, eight hundred seventy thousand, nine hundred".