399012160 has 224 divisors, whose sum is σ = 1082649600. Its totient is φ = 139345920.

The previous prime is 399012157. The next prime is 399012167. The reversal of 399012160 is 61210993.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399012167) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5465884 + ... + 5465956.

Almost surely, 2^399012160 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 399012160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541324800).

399012160 is an abundant number, since it is smaller than the sum of its proper divisors (683637440).

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

399012160 is a wasteful number, since it uses less digits than its factorization.

399012160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169 (or 159 counting only the distinct ones).

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

The square root of 399012160 is about 19975.2887338331. The cubic root of 399012160 is about 736.1992607931.

The spelling of 399012160 in words is "three hundred ninety-nine million, twelve thousand, one hundred sixty".