398508132 has 48 divisors (see below), whose sum is σ = 1015560000. Its totient is φ = 120620160.

The previous prime is 398508127. The next prime is 398508163. The reversal of 398508132 is 231805893.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203494 + ... + 205442.

It is an arithmetic number, because the mean of its divisors is an integer number (21157500).

Almost surely, 2^398508132 is an apocalyptic number.

It is an amenable number.

398508132 is an abundant number, since it is smaller than the sum of its proper divisors (617051868).

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

398508132 is a wasteful number, since it uses less digits than its factorization.

398508132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3516 (or 3514 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 398508132 is about 19962.6684589010. The cubic root of 398508132 is about 735.8891437676.

The spelling of 398508132 in words is "three hundred ninety-eight million, five hundred eight thousand, one hundred thirty-two".