399298560 has 208 divisors, whose sum is σ = 1310035776. Its totient is φ = 103809024.

The previous prime is 399298553. The next prime is 399298573. The reversal of 399298560 is 65892993.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4116432 + ... + 4116528.

Almost surely, 2^399298560 is an apocalyptic number.

399298560 is a gapful number since it is divisible by the number (30) 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 399298560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (655017888).

399298560 is an abundant number, since it is smaller than the sum of its proper divisors (910737216).

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

399298560 is an equidigital number, since it uses as much as digits as its factorization.

399298560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 51.

The square root of 399298560 is about 19982.4563054696. The cubic root of 399298560 is about 736.3753598887.

The spelling of 399298560 in words is "three hundred ninety-nine million, two hundred ninety-eight thousand, five hundred sixty".