399042402360 has 512 divisors, whose sum is σ = 1492195737600. Its totient is φ = 83403048960.

The previous prime is 399042402349. The next prime is 399042402377. The reversal of 399042402360 is 63204240993.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 35486899 + ... + 35498141.

It is an arithmetic number, because the mean of its divisors is an integer number (2914444800).

Almost surely, 2^399042402360 is an apocalyptic number.

399042402360 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 399042402360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (746097868800).

399042402360 is an abundant number, since it is smaller than the sum of its proper divisors (1093153335240).

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

399042402360 is a wasteful number, since it uses less digits than its factorization.

399042402360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11371 (or 11367 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 42.

The spelling of 399042402360 in words is "three hundred ninety-nine billion, forty-two million, four hundred two thousand, three hundred sixty".