9929794728 has 48 divisors (see below), whose sum is σ = 28877467680. Its totient is φ = 2837083872.

The previous prime is 9929794711. The next prime is 9929794751. The reversal of 9929794728 is 8274979299.

9929794728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4220676 + ... + 4223027.

It is an arithmetic number, because the mean of its divisors is an integer number (601613910).

Almost surely, 2^9929794728 is an apocalyptic number.

9929794728 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

9929794728 is an abundant number, since it is smaller than the sum of its proper divisors (18947672952).

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

9929794728 is a wasteful number, since it uses less digits than its factorization.

9929794728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8443726 (or 8443715 counting only the distinct ones).

The product of its digits is 41150592, while the sum is 66.

The square root of 9929794728 is about 99648.3553702719. The cubic root of 9929794728 is about 2149.3810894222.

The spelling of 9929794728 in words is "nine billion, nine hundred twenty-nine million, seven hundred ninety-four thousand, seven hundred twenty-eight".