399102312 has 64 divisors (see below), whose sum is σ = 1154764800. Its totient is φ = 112582080.

The previous prime is 399102293. The next prime is 399102337. The reversal of 399102312 is 213201993.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 399102312.

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, 1764 + ... + 28307.

It is an arithmetic number, because the mean of its divisors is an integer number (18043200).

Almost surely, 2^399102312 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 399102312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (577382400).

399102312 is an abundant number, since it is smaller than the sum of its proper divisors (755662488).

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

399102312 is a wasteful number, since it uses less digits than its factorization.

399102312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30166 (or 30162 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 399102312 is about 19977.5451945428. The cubic root of 399102312 is about 736.2547017417.

The spelling of 399102312 in words is "three hundred ninety-nine million, one hundred two thousand, three hundred twelve".