399424512 has 44 divisors (see below), whose sum is σ = 1064620136. Its totient is φ = 133140480.

The previous prime is 399424507. The next prime is 399424541. The reversal of 399424512 is 215424993.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61939 + ... + 68082.

Almost surely, 2^399424512 is an apocalyptic number.

399424512 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

399424512 is an abundant number, since it is smaller than the sum of its proper divisors (665195624).

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

399424512 is a wasteful number, since it uses less digits than its factorization.

399424512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130044 (or 130026 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 399424512 is about 19985.6076214860. The cubic root of 399424512 is about 736.4527774808.

The spelling of 399424512 in words is "three hundred ninety-nine million, four hundred twenty-four thousand, five hundred twelve".