399900504 has 32 divisors (see below), whose sum is σ = 1006470000. Its totient is φ = 132404352.

The previous prime is 399900461. The next prime is 399900533. The reversal of 399900504 is 405009993.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52339 + ... + 59490.

Almost surely, 2^399900504 is an apocalyptic number.

It is an amenable number.

399900504 is an abundant number, since it is smaller than the sum of its proper divisors (606569496).

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

399900504 is a wasteful number, since it uses less digits than its factorization.

399900504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111987 (or 111983 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 39.

The square root of 399900504 is about 19997.5124453018. The cubic root of 399900504 is about 736.7452035958.

The spelling of 399900504 in words is "three hundred ninety-nine million, nine hundred thousand, five hundred four".