398799397120 has 72 divisors (see below), whose sum is σ = 968335013016. Its totient is φ = 157334519808.

The previous prime is 398799397099. The next prime is 398799397151. The reversal of 398799397120 is 21793997893.

It can be written as a sum of positive squares in 4 ways, for example, as 160358600704 + 238440796416 = 400448^2 + 488304^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2040547 + ... + 2227426.

It is an arithmetic number, because the mean of its divisors is an integer number (13449097403).

Almost surely, 2^398799397120 is an apocalyptic number.

It is an amenable number.

398799397120 is an abundant number, since it is smaller than the sum of its proper divisors (569535615896).

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

398799397120 is an equidigital number, since it uses as much as digits as its factorization.

398799397120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4268067 (or 4268053 counting only the distinct ones).

The product of its (nonzero) digits is 46294416, while the sum is 67.

The spelling of 398799397120 in words is "three hundred ninety-eight billion, seven hundred ninety-nine million, three hundred ninety-seven thousand, one hundred twenty".