398708900 has 36 divisors (see below), whose sum is σ = 885328752. Its totient is φ = 155772960.

The previous prime is 398708881. The next prime is 398708903. The reversal of 398708900 is 9807893.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (398708903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42062 + ... + 50661.

Almost surely, 2^398708900 is an apocalyptic number.

It is an amenable number.

398708900 is an abundant number, since it is smaller than the sum of its proper divisors (486619852).

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

398708900 is a wasteful number, since it uses less digits than its factorization.

398708900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92780 (or 92773 counting only the distinct ones).

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

The square root of 398708900 is about 19967.6964119550. The cubic root of 398708900 is about 736.0127030928.

The spelling of 398708900 in words is "three hundred ninety-eight million, seven hundred eight thousand, nine hundred".