399463704 has 64 divisors (see below), whose sum is σ = 1114646400. Its totient is φ = 132551712.

The previous prime is 399463663. The next prime is 399463741. The reversal of 399463704 is 407364993.

399463704 is a `hidden beast` number, since 3 + 9 + 9 + 4 + 637 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 399463704.

It is a congruent number.

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, 44959 + ... + 53105.

It is an arithmetic number, because the mean of its divisors is an integer number (17416350).

Almost surely, 2^399463704 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 399463704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (557323200).

399463704 is an abundant number, since it is smaller than the sum of its proper divisors (715182696).

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

399463704 is a wasteful number, since it uses less digits than its factorization.

399463704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8389 (or 8379 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The square root of 399463704 is about 19986.5881030255. The cubic root of 399463704 is about 736.4768638955.

The spelling of 399463704 in words is "three hundred ninety-nine million, four hundred sixty-three thousand, seven hundred four".