398427766896 has 120 divisors (see below), whose sum is σ = 1062027223824. Its totient is φ = 128678077440.

The previous prime is 398427766853. The next prime is 398427766909. The reversal of 398427766896 is 698667724893.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13128636 + ... + 13158948.

Almost surely, 2^398427766896 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 398427766896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (531013611912).

398427766896 is an abundant number, since it is smaller than the sum of its proper divisors (663599456928).

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

398427766896 is a wasteful number, since it uses less digits than its factorization.

398427766896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30519 (or 30446 counting only the distinct ones).

The product of its digits is 1316818944, while the sum is 75.

The spelling of 398427766896 in words is "three hundred ninety-eight billion, four hundred twenty-seven million, seven hundred sixty-six thousand, eight hundred ninety-six".