398940802960 has 320 divisors, whose sum is σ = 1121213952000. Its totient is φ = 131817369600.

The previous prime is 398940802921. The next prime is 398940802961. The reversal of 398940802960 is 69208049893.

It is a junction number, because it is equal to n+sod(n) for n = 398940802895 and 398940802904.

It is not an unprimeable number, because it can be changed into a prime (398940802961) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 239029006 + ... + 239030674.

It is an arithmetic number, because the mean of its divisors is an integer number (3503793600).

Almost surely, 2^398940802960 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398940802960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (560606976000).

398940802960 is an abundant number, since it is smaller than the sum of its proper divisors (722273149040).

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

398940802960 is a wasteful number, since it uses less digits than its factorization.

398940802960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015 (or 1995 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 58.

The spelling of 398940802960 in words is "three hundred ninety-eight billion, nine hundred forty million, eight hundred two thousand, nine hundred sixty".