399123112 has 16 divisors (see below), whose sum is σ = 748575360. Its totient is φ = 199503024.

The previous prime is 399123103. The next prime is 399123113. The reversal of 399123112 is 211321993.

It is not an unprimeable number, because it can be changed into a prime (399123113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38643 + ... + 47869.

It is an arithmetic number, because the mean of its divisors is an integer number (46785960).

Almost surely, 2^399123112 is an apocalyptic number.

It is an amenable number.

399123112 is a deficient number, since it is larger than the sum of its proper divisors (349452248).

399123112 is a wasteful number, since it uses less digits than its factorization.

399123112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14640 (or 14636 counting only the distinct ones).

The product of its digits is 2916, while the sum is 31.

The square root of 399123112 is about 19978.0657722413. The cubic root of 399123112 is about 736.2674919722.

The spelling of 399123112 in words is "three hundred ninety-nine million, one hundred twenty-three thousand, one hundred twelve".