399710896 has 20 divisors (see below), whose sum is σ = 834012592. Its totient is φ = 184481856.

The previous prime is 399710887. The next prime is 399710897. The reversal of 399710896 is 698017993.

It is a super-2 number, since 2×399710896² = 319537600762245632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (399710897) 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, 960636 + ... + 961051.

Almost surely, 2^399710896 is an apocalyptic number.

It is an amenable number.

399710896 is an abundant number, since it is smaller than the sum of its proper divisors (434301696).

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

399710896 is a wasteful number, since it uses less digits than its factorization.

399710896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921708 (or 1921702 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 399710896 is about 19992.7710935728. The cubic root of 399710896 is about 736.6287455711.

The spelling of 399710896 in words is "three hundred ninety-nine million, seven hundred ten thousand, eight hundred ninety-six".