398871523776 has 112 divisors (see below), whose sum is σ = 1152018910080. Its totient is φ = 120793451520.

The previous prime is 398871523741. The next prime is 398871523811. The reversal of 398871523776 is 677325178893.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (398871523741) and next prime (398871523811).

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

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, 3313735 + ... + 3431993.

Almost surely, 2^398871523776 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 398871523776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (576009455040).

398871523776 is an abundant number, since it is smaller than the sum of its proper divisors (753147386304).

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

398871523776 is a wasteful number, since it uses less digits than its factorization.

398871523776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119882 (or 119872 counting only the distinct ones).

The product of its digits is 106686720, while the sum is 66.

The spelling of 398871523776 in words is "three hundred ninety-eight billion, eight hundred seventy-one million, five hundred twenty-three thousand, seven hundred seventy-six".