399081090330 has 288 divisors, whose sum is σ = 1160263802880. Its totient is φ = 95065850880.

The previous prime is 399081090313. The next prime is 399081090337. The reversal of 399081090330 is 33090180993.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (399081090337) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 79195951 + ... + 79200989.

It is an arithmetic number, because the mean of its divisors is an integer number (4028693760).

Almost surely, 2^399081090330 is an apocalyptic number.

399081090330 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 399081090330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (580131901440).

399081090330 is an abundant number, since it is smaller than the sum of its proper divisors (761182712550).

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

399081090330 is a wasteful number, since it uses less digits than its factorization.

399081090330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5246 (or 5230 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The spelling of 399081090330 in words is "three hundred ninety-nine billion, eighty-one million, ninety thousand, three hundred thirty".