399791124480 has 312 divisors, whose sum is σ = 1406061948816. Its totient is φ = 96917258240.

The previous prime is 399791124479. The next prime is 399791124493. The reversal of 399791124480 is 84421197993.

It is a self number, because there is not a number n which added to its sum of digits gives 399791124480.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7407352 + ... + 7461128.

Almost surely, 2^399791124480 is an apocalyptic number.

399791124480 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 399791124480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (703030974408).

399791124480 is an abundant number, since it is smaller than the sum of its proper divisors (1006270824336).

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

399791124480 is a wasteful number, since it uses less digits than its factorization.

399791124480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53831 (or 53798 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 57.

The spelling of 399791124480 in words is "three hundred ninety-nine billion, seven hundred ninety-one million, one hundred twenty-four thousand, four hundred eighty".