398882179240 has 32 divisors (see below), whose sum is σ = 919374782760. Its totient is φ = 155661337600.

The previous prime is 398882179237. The next prime is 398882179249. The reversal of 398882179240 is 42971288893.

It can be written as a sum of positive squares in 4 ways, for example, as 222514097796 + 176368081444 = 471714^2 + 419962^2 .

It is not an unprimeable number, because it can be changed into a prime (398882179249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121608781 + ... + 121612060.

Almost surely, 2^398882179240 is an apocalyptic number.

It is an amenable number.

398882179240 is an abundant number, since it is smaller than the sum of its proper divisors (520492603520).

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

398882179240 is a wasteful number, since it uses less digits than its factorization.

398882179240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243220893 (or 243220889 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 61.

The spelling of 398882179240 in words is "three hundred ninety-eight billion, eight hundred eighty-two million, one hundred seventy-nine thousand, two hundred forty".