398877574824 has 160 divisors (see below), whose sum is σ = 1125528022080. Its totient is φ = 131973601536.

The previous prime is 398877574807. The next prime is 398877574841. The reversal of 398877574824 is 428475778893.

It is a happy number.

398877574824 is a `hidden beast` number, since 3 + 98 + 8 + 7 + 7 + 57 + 482 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (398877574807) and next prime (398877574841).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 89492404 + ... + 89496860.

It is an arithmetic number, because the mean of its divisors is an integer number (7034550138).

Almost surely, 2^398877574824 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398877574824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (562764011040).

398877574824 is an abundant number, since it is smaller than the sum of its proper divisors (726650447256).

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

398877574824 is a wasteful number, since it uses less digits than its factorization.

398877574824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5469 (or 5456 counting only the distinct ones).

The product of its digits is 758661120, while the sum is 72.

The spelling of 398877574824 in words is "three hundred ninety-eight billion, eight hundred seventy-seven million, five hundred seventy-four thousand, eight hundred twenty-four".