399578304 has 112 divisors (see below), whose sum is σ = 1087871840. Its totient is φ = 129392640.

The previous prime is 399578279. The next prime is 399578323. The reversal of 399578304 is 403875993.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1276452 + ... + 1276764.

Almost surely, 2^399578304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399578304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (543935920).

399578304 is an abundant number, since it is smaller than the sum of its proper divisors (688293536).

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

399578304 is a wasteful number, since it uses less digits than its factorization.

399578304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 48.

The square root of 399578304 is about 19989.4548199795. The cubic root of 399578304 is about 736.5472851277.

The spelling of 399578304 in words is "three hundred ninety-nine million, five hundred seventy-eight thousand, three hundred four".