9933981876 has 108 divisors (see below), whose sum is σ = 31457681892. Its totient is φ = 2619945216.

The previous prime is 9933981859. The next prime is 9933981949. The reversal of 9933981876 is 6781893399.

It can be written as a sum of positive squares in 2 ways, for example, as 3916256400 + 6017725476 = 62580^2 + 77574^2 .

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 193665 + ... + 239528.

Almost surely, 2^9933981876 is an apocalyptic number.

It is an amenable number.

9933981876 is an abundant number, since it is smaller than the sum of its proper divisors (21523700016).

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

9933981876 is a wasteful number, since it uses less digits than its factorization.

9933981876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433230 (or 433218 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 63.

The square root of 9933981876 is about 99669.3627751276. The cubic root of 9933981876 is about 2149.6831605217.

The spelling of 9933981876 in words is "nine billion, nine hundred thirty-three million, nine hundred eighty-one thousand, eight hundred seventy-six".