399628696 has 8 divisors (see below), whose sum is σ = 749303820. Its totient is φ = 199814344.

The previous prime is 399628693. The next prime is 399628709. The reversal of 399628696 is 696826993.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 399628696.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399628693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24976786 + ... + 24976801.

Almost surely, 2^399628696 is an apocalyptic number.

It is an amenable number.

399628696 is a deficient number, since it is larger than the sum of its proper divisors (349675124).

399628696 is a wasteful number, since it uses less digits than its factorization.

399628696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49953593 (or 49953589 counting only the distinct ones).

The product of its digits is 7558272, while the sum is 58.

The square root of 399628696 is about 19990.7152448330. The cubic root of 399628696 is about 736.5782465440.

The spelling of 399628696 in words is "three hundred ninety-nine million, six hundred twenty-eight thousand, six hundred ninety-six".