398889063790 has 64 divisors (see below), whose sum is σ = 828512354304. Its totient is φ = 135442395648.

The previous prime is 398889063757. The next prime is 398889063817. The reversal of 398889063790 is 97360988893.

It is a super-3 number, since 3×398889063790³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (70).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4965222 + ... + 5044918.

It is an arithmetic number, because the mean of its divisors is an integer number (12945505536).

Almost surely, 2^398889063790 is an apocalyptic number.

398889063790 is an abundant number, since it is smaller than the sum of its proper divisors (429623290514).

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

398889063790 is a wasteful number, since it uses less digits than its factorization.

398889063790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80401.

The product of its (nonzero) digits is 141087744, while the sum is 70.

The spelling of 398889063790 in words is "three hundred ninety-eight billion, eight hundred eighty-nine million, sixty-three thousand, seven hundred ninety".