9987875392 has 112 divisors (see below), whose sum is σ = 21980859264. Its totient is φ = 4465152000.

The previous prime is 9987875383. The next prime is 9987875393. The reversal of 9987875392 is 2935787899.

It is a super-2 number, since 2×9987875392² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9987875393) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13124292 + ... + 13125052.

It is an arithmetic number, because the mean of its divisors is an integer number (196257672).

Almost surely, 2^9987875392 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 9987875392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10990429632).

9987875392 is an abundant number, since it is smaller than the sum of its proper divisors (11992983872).

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

9987875392 is a wasteful number, since it uses less digits than its factorization.

9987875392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068 (or 1058 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 67.

The square root of 9987875392 is about 99939.3585730867. The cubic root of 9987875392 is about 2153.5636153531.

The spelling of 9987875392 in words is "nine billion, nine hundred eighty-seven million, eight hundred seventy-five thousand, three hundred ninety-two".