9969984928 has 24 divisors (see below), whose sum is σ = 19897294788. Its totient is φ = 4916703744.

The previous prime is 9969984901. The next prime is 9969984943. The reversal of 9969984928 is 8294899699.

It can be written as a sum of positive squares in 2 ways, for example, as 8698919824 + 1271065104 = 93268^2 + 35652^2 .

It is a Harshad number since it is a multiple of its sum of digits (73).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2131651 + ... + 2136322.

Almost surely, 2^9969984928 is an apocalyptic number.

It is an amenable number.

9969984928 is a deficient number, since it is larger than the sum of its proper divisors (9927309860).

9969984928 is a wasteful number, since it uses less digits than its factorization.

9969984928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4268056 (or 4268048 counting only the distinct ones).

The product of its digits is 181398528, while the sum is 73.

The square root of 9969984928 is about 99849.8118576094. The cubic root of 9969984928 is about 2152.2770127505.

The spelling of 9969984928 in words is "nine billion, nine hundred sixty-nine million, nine hundred eighty-four thousand, nine hundred twenty-eight".