398878098084 has 60 divisors (see below), whose sum is σ = 1044373431948. Its totient is φ = 132751872000.

The previous prime is 398878098037. The next prime is 398878098097. The reversal of 398878098084 is 480890878893.

It is a happy number.

398878098084 is a `hidden beast` number, since 398 + 8 + 7 + 80 + 9 + 80 + 84 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 368837582400 + 30040515684 = 607320^2 + 173322^2 .

It is a super-2 number, since 2×398878098084² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 752617 + ... + 1167984.

Almost surely, 2^398878098084 is an apocalyptic number.

It is an amenable number.

398878098084 is an abundant number, since it is smaller than the sum of its proper divisors (645495333864).

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

398878098084 is a wasteful number, since it uses less digits than its factorization.

398878098084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921258 (or 1921247 counting only the distinct ones).

The product of its (nonzero) digits is 222953472, while the sum is 72.

The spelling of 398878098084 in words is "three hundred ninety-eight billion, eight hundred seventy-eight million, ninety-eight thousand, eighty-four".