398554915620 has 24 divisors (see below), whose sum is σ = 1115953763904. Its totient is φ = 106281310816.

The previous prime is 398554915613. The next prime is 398554915631. The reversal of 398554915620 is 26519455893.

It is a happy number.

398554915620 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3321290904 + ... + 3321291023.

It is an arithmetic number, because the mean of its divisors is an integer number (46498073496).

Almost surely, 2^398554915620 is an apocalyptic number.

398554915620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

398554915620 is an abundant number, since it is smaller than the sum of its proper divisors (717398848284).

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

398554915620 is a wasteful number, since it uses less digits than its factorization.

398554915620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6642581939 (or 6642581937 counting only the distinct ones).

The product of its (nonzero) digits is 11664000, while the sum is 57.

The spelling of 398554915620 in words is "three hundred ninety-eight billion, five hundred fifty-four million, nine hundred fifteen thousand, six hundred twenty".