398398704000 has 512 divisors, whose sum is σ = 1445675212800. Its totient is φ = 96251904000.

The previous prime is 398398703959. The next prime is 398398704023. The reversal of 398398704000 is 407893893.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 177934881 + ... + 177937119.

It is an arithmetic number, because the mean of its divisors is an integer number (2823584400).

Almost surely, 2^398398704000 is an apocalyptic number.

398398704000 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 398398704000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (722837606400).

398398704000 is an abundant number, since it is smaller than the sum of its proper divisors (1047276508800).

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

398398704000 is a wasteful number, since it uses less digits than its factorization.

398398704000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2619 (or 2597 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 398398704000 in words is "three hundred ninety-eight billion, three hundred ninety-eight million, seven hundred four thousand".