399797368 has 32 divisors (see below), whose sum is σ = 760752000. Its totient is φ = 196951392.

The previous prime is 399797351. The next prime is 399797383. The reversal of 399797368 is 863797993.

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, 169171 + ... + 171517.

It is an arithmetic number, because the mean of its divisors is an integer number (23773500).

Almost surely, 2^399797368 is an apocalyptic number.

It is an amenable number.

399797368 is a deficient number, since it is larger than the sum of its proper divisors (360954632).

399797368 is a wasteful number, since it uses less digits than its factorization.

399797368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659 (or 2655 counting only the distinct ones).

The product of its digits is 15431472, while the sum is 61.

The square root of 399797368 is about 19994.9335582792. The cubic root of 399797368 is about 736.6818616013.

The spelling of 399797368 in words is "three hundred ninety-nine million, seven hundred ninety-seven thousand, three hundred sixty-eight".