398888529020 has 24 divisors (see below), whose sum is σ = 837677846544. Its totient is φ = 159553138176.

The previous prime is 398888529019. The next prime is 398888529031. The reversal of 398888529020 is 20925888893.

It is a super-2 number, since 2×398888529020² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 2449787 + ... + 2607533.

It is an arithmetic number, because the mean of its divisors is an integer number (34903243606).

Almost surely, 2^398888529020 is an apocalyptic number.

It is an amenable number.

398888529020 is an abundant number, since it is smaller than the sum of its proper divisors (438789317524).

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

398888529020 is a wasteful number, since it uses less digits than its factorization.

398888529020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284189 (or 284187 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 62.

The spelling of 398888529020 in words is "three hundred ninety-eight billion, eight hundred eighty-eight million, five hundred twenty-nine thousand, twenty".