399322112 has 176 divisors, whose sum is σ = 1008106560. Its totient is φ = 154140672.

The previous prime is 399322103. The next prime is 399322139. The reversal of 399322112 is 211223993.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 3533768 + ... + 3533880.

Almost surely, 2^399322112 is an apocalyptic number.

399322112 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 399322112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (504053280).

399322112 is an abundant number, since it is smaller than the sum of its proper divisors (608784448).

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

399322112 is a wasteful number, since it uses less digits than its factorization.

399322112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 168 counting only the distinct ones).

The product of its digits is 5832, while the sum is 32.

The square root of 399322112 is about 19983.0456137196. The cubic root of 399322112 is about 736.3898375864.

The spelling of 399322112 in words is "three hundred ninety-nine million, three hundred twenty-two thousand, one hundred twelve".