9928396863 has 24 divisors (see below), whose sum is σ = 17879711616. Its totient is φ = 5157608400.

The previous prime is 9928396853. The next prime is 9928396883. The reversal of 9928396863 is 3686938299.

9928396863 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9928396863 - 2²⁵ = 9894842431 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 9928396863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9928396853) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 7162653 + ... + 7164038.

It is an arithmetic number, because the mean of its divisors is an integer number (744987984).

Almost surely, 2^9928396863 is an apocalyptic number.

9928396863 is a deficient number, since it is larger than the sum of its proper divisors (7951314753).

9928396863 is a wasteful number, since it uses less digits than its factorization.

9928396863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14326715 (or 14326712 counting only the distinct ones).

The product of its digits is 30233088, while the sum is 63.

The square root of 9928396863 is about 99641.3411340895. The cubic root of 9928396863 is about 2149.2802251151.

The spelling of 9928396863 in words is "nine billion, nine hundred twenty-eight million, three hundred ninety-six thousand, eight hundred sixty-three".