398981232 has 60 divisors (see below), whose sum is σ = 1202490744. Its totient is φ = 122762880.

The previous prime is 398981221. The next prime is 398981239. The reversal of 398981232 is 232189893.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398981239) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 104694 + ... + 108437.

Almost surely, 2^398981232 is an apocalyptic number.

It is an amenable number.

398981232 is an abundant number, since it is smaller than the sum of its proper divisors (803509512).

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

398981232 is a wasteful number, since it uses less digits than its factorization.

398981232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213158 (or 213149 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 398981232 is about 19974.5145623116. The cubic root of 398981232 is about 736.1802390177.

The spelling of 398981232 in words is "three hundred ninety-eight million, nine hundred eighty-one thousand, two hundred thirty-two".