399244312 has 16 divisors (see below), whose sum is σ = 754479360. Its totient is φ = 198049824.

The previous prime is 399244309. The next prime is 399244331. The reversal of 399244312 is 213442993.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195463 + ... + 197494.

It is an arithmetic number, because the mean of its divisors is an integer number (47154960).

Almost surely, 2^399244312 is an apocalyptic number.

It is an amenable number.

399244312 is a deficient number, since it is larger than the sum of its proper divisors (355235048).

399244312 is a wasteful number, since it uses less digits than its factorization.

399244312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393090 (or 393086 counting only the distinct ones).

The product of its digits is 46656, while the sum is 37.

The square root of 399244312 is about 19981.0988686809. The cubic root of 399244312 is about 736.3420108247.

The spelling of 399244312 in words is "three hundred ninety-nine million, two hundred forty-four thousand, three hundred twelve".