399492332 has 12 divisors (see below), whose sum is σ = 702166080. Its totient is φ = 198873456.

The previous prime is 399492329. The next prime is 399492337. The reversal of 399492332 is 233294993.

It is not an unprimeable number, because it can be changed into a prime (399492337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217148 + ... + 218979.

It is an arithmetic number, because the mean of its divisors is an integer number (58513840).

Almost surely, 2^399492332 is an apocalyptic number.

It is an amenable number.

399492332 is a deficient number, since it is larger than the sum of its proper divisors (302673748).

399492332 is a wasteful number, since it uses less digits than its factorization.

399492332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436360 (or 436358 counting only the distinct ones).

The product of its digits is 314928, while the sum is 44.

The square root of 399492332 is about 19987.3042704613. The cubic root of 399492332 is about 736.4944569465.

The spelling of 399492332 in words is "three hundred ninety-nine million, four hundred ninety-two thousand, three hundred thirty-two".