398837072744 has 64 divisors (see below), whose sum is σ = 842557524480. Its totient is φ = 175350240000.

The previous prime is 398837072731. The next prime is 398837072779. The reversal of 398837072744 is 447270738893.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5345294 + ... + 5419394.

It is an arithmetic number, because the mean of its divisors is an integer number (13164961320).

Almost surely, 2^398837072744 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 398837072744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421278762240).

398837072744 is an abundant number, since it is smaller than the sum of its proper divisors (443720451736).

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

398837072744 is a wasteful number, since it uses less digits than its factorization.

398837072744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76122 (or 76118 counting only the distinct ones).

The product of its (nonzero) digits is 56899584, while the sum is 62.

The spelling of 398837072744 in words is "three hundred ninety-eight billion, eight hundred thirty-seven million, seventy-two thousand, seven hundred forty-four".