398878098164 has 48 divisors (see below), whose sum is σ = 859289483136. Its totient is φ = 157767177600.

The previous prime is 398878098097. The next prime is 398878098187. The reversal of 398878098164 is 461890878893.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1810859 + ... + 2019149.

It is an arithmetic number, because the mean of its divisors is an integer number (17901864232).

Almost surely, 2^398878098164 is an apocalyptic number.

It is an amenable number.

398878098164 is an abundant number, since it is smaller than the sum of its proper divisors (460411384972).

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

398878098164 is a wasteful number, since it uses less digits than its factorization.

398878098164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213576 (or 213574 counting only the distinct ones).

The product of its (nonzero) digits is 167215104, while the sum is 71.

The spelling of 398878098164 in words is "three hundred ninety-eight billion, eight hundred seventy-eight million, ninety-eight thousand, one hundred sixty-four".