9933981875 has 40 divisors (see below), whose sum is σ = 13192701984. Its totient is φ = 7451840000.

The previous prime is 9933981859. The next prime is 9933981949. The reversal of 9933981875 is 5781893399.

It is a happy number.

It is not a de Polignac number, because 9933981875 - 2⁴ = 9933981859 is a prime.

It is a Duffinian number.

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 39 ways as a sum of consecutive naturals, for example, 3111530 + ... + 3114720.

Almost surely, 2^9933981875 is an apocalyptic number.

9933981875 is a deficient number, since it is larger than the sum of its proper divisors (3258720109).

9933981875 is a wasteful number, since it uses less digits than its factorization.

9933981875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3521 (or 3506 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 62.

The square root of 9933981875 is about 99669.3627701111. The cubic root of 9933981875 is about 2149.6831604495.

The spelling of 9933981875 in words is "nine billion, nine hundred thirty-three million, nine hundred eighty-one thousand, eight hundred seventy-five".