398961395064324 has 27 divisors (see below), whose sum is σ = 1008486051574183. Its totient is φ = 132987091740072.

The previous prime is 398961395064307. The next prime is 398961395064409. The reversal of 398961395064324 is 423460593169893.

The square root of 398961395064324 is 19974018.

It is a perfect power (a square), and thus also a powerful number.

398961395064324 is a `hidden beast` number, since 3 + 9 + 8 + 9 + 6 + 139 + 50 + 6 + 432 + 4 = 666.

It is a super-2 number, since 2×398961395064324² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 118179607 + ... + 121508609.

Almost surely, 2^{398961395064324} is an apocalyptic number.

398961395064324 is the 19974018-th square number.

It is an amenable number.

398961395064324 is an abundant number, since it is smaller than the sum of its proper divisors (609524656509859).

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

398961395064324 is an frugal number, since it uses more digits than its factorization.

398961395064324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6658016 (or 3329008 counting only the distinct ones).

The product of its (nonzero) digits is 906992640, while the sum is 72.

The spelling of 398961395064324 in words is "three hundred ninety-eight trillion, nine hundred sixty-one billion, three hundred ninety-five million, sixty-four thousand, three hundred twenty-four".