399596 has 12 divisors (see below), whose sum is σ = 703752. Its totient is φ = 198528.

The previous prime is 399587. The next prime is 399601. The reversal of 399596 is 695993.

It is a happy number.

It is an unprimeable number.

399596 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 956 + ... + 1308.

It is an arithmetic number, because the mean of its divisors is an integer number (58646).

2³⁹⁹⁵⁹⁶ is an apocalyptic number.

It is an amenable number.

399596 is a deficient number, since it is larger than the sum of its proper divisors (304156).

399596 is a wasteful number, since it uses less digits than its factorization.

399596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 638 counting only the distinct ones).

The product of its digits is 65610, while the sum is 41.

The square root of 399596 is about 632.1360613033. The cubic root of 399596 is about 73.6558158047.

It can be divided in two parts, 3 and 99596, that added together give a palindrome (99599).

The spelling of 399596 in words is "three hundred ninety-nine thousand, five hundred ninety-six".