398846066688 has 304 divisors, whose sum is σ = 1214500349760. Its totient is φ = 129270546432.

The previous prime is 398846066639. The next prime is 398846066713. The reversal of 398846066688 is 886660648893.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261881095 + ... + 261882617.

It is an arithmetic number, because the mean of its divisors is an integer number (3995066940).

Almost surely, 2^398846066688 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 398846066688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (607250174880).

398846066688 is an abundant number, since it is smaller than the sum of its proper divisors (815654283072).

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

398846066688 is an frugal number, since it uses more digits than its factorization.

398846066688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605 (or 1565 counting only the distinct ones).

The product of its (nonzero) digits is 573308928, while the sum is 72.

The spelling of 398846066688 in words is "three hundred ninety-eight billion, eight hundred forty-six million, sixty-six thousand, six hundred eighty-eight".