399876560 has 40 divisors (see below), whose sum is σ = 930717216. Its totient is φ = 159777920.

The previous prime is 399876541. The next prime is 399876619. The reversal of 399876560 is 65678993.

It is a tau number, because it is divible by the number of its divisors (40).

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, 92855 + ... + 97065.

Almost surely, 2^399876560 is an apocalyptic number.

It is an amenable number.

399876560 is an abundant number, since it is smaller than the sum of its proper divisors (530840656).

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

399876560 is a wasteful number, since it uses less digits than its factorization.

399876560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5411 (or 5405 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 53.

The square root of 399876560 is about 19996.9137618784. The cubic root of 399876560 is about 736.7304991222.

The spelling of 399876560 in words is "three hundred ninety-nine million, eight hundred seventy-six thousand, five hundred sixty".