398232179140 has 24 divisors (see below), whose sum is σ = 846873498240. Its totient is φ = 157276505568.

The previous prime is 398232179129. The next prime is 398232179141. The reversal of 398232179140 is 41971232893.

It is a happy number.

It is a super-2 number, since 2×398232179140² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (398232179141) 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, 126021262 + ... + 126024421.

It is an arithmetic number, because the mean of its divisors is an integer number (35286395760).

Almost surely, 2^398232179140 is an apocalyptic number.

It is an amenable number.

398232179140 is an abundant number, since it is smaller than the sum of its proper divisors (448641319100).

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

398232179140 is a wasteful number, since it uses less digits than its factorization.

398232179140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252045771 (or 252045769 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 398232179140 in words is "three hundred ninety-eight billion, two hundred thirty-two million, one hundred seventy-nine thousand, one hundred forty".