398175491844 has 72 divisors (see below), whose sum is σ = 1084032774552. Its totient is φ = 122503034880.

The previous prime is 398175491771. The next prime is 398175491851. The reversal of 398175491844 is 448194571893.

398175491844 is a `hidden beast` number, since 3 + 9 + 8 + 1 + 7 + 549 + 1 + 84 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 212447246400 + 185728245444 = 460920^2 + 430962^2 .

It is a super-4 number, since 4×398175491844⁴ (a number of 48 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5232372 + ... + 5307924.

Almost surely, 2^398175491844 is an apocalyptic number.

It is an amenable number.

398175491844 is an abundant number, since it is smaller than the sum of its proper divisors (685857282708).

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

398175491844 is a wasteful number, since it uses less digits than its factorization.

398175491844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86837 (or 86832 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 63.

The spelling of 398175491844 in words is "three hundred ninety-eight billion, one hundred seventy-five million, four hundred ninety-one thousand, eight hundred forty-four".