399155130 has 96 divisors (see below), whose sum is σ = 1171272960. Its totient is φ = 93421440.

The previous prime is 399155129. The next prime is 399155191. The reversal of 399155130 is 31551993.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21759 + ... + 35661.

It is an arithmetic number, because the mean of its divisors is an integer number (12200760).

Almost surely, 2^399155130 is an apocalyptic number.

399155130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 399155130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (585636480).

399155130 is an abundant number, since it is smaller than the sum of its proper divisors (772117830).

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

399155130 is a wasteful number, since it uses less digits than its factorization.

399155130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13956 (or 13953 counting only the distinct ones).

The product of its (nonzero) digits is 18225, while the sum is 36.

The square root of 399155130 is about 19978.8670849976. The cubic root of 399155130 is about 736.2871794500.

The spelling of 399155130 in words is "three hundred ninety-nine million, one hundred fifty-five thousand, one hundred thirty".