9988713992 has 16 divisors (see below), whose sum is σ = 18776990700. Its totient is φ = 4981516480.

The previous prime is 9988713989. The next prime is 9988714009. The reversal of 9988713992 is 2993178899.

9988713992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9965230276 + 23483716 = 99826^2 + 4846^2 .

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 3 ways as a sum of consecutive naturals, for example, 1601759 + ... + 1607982.

Almost surely, 2^9988713992 is an apocalyptic number.

It is an amenable number.

9988713992 is a deficient number, since it is larger than the sum of its proper divisors (8788276708).

9988713992 is a wasteful number, since it uses less digits than its factorization.

9988713992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3210136 (or 3210132 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 65.

The square root of 9988713992 is about 99943.5540292619. The cubic root of 9988713992 is about 2153.6238860258.

The spelling of 9988713992 in words is "nine billion, nine hundred eighty-eight million, seven hundred thirteen thousand, nine hundred ninety-two".