9898987876 has 12 divisors (see below), whose sum is σ = 17542510720. Its totient is φ = 4886841960.

The previous prime is 9898987853. The next prime is 9898987877. The reversal of 9898987876 is 6787898989.

9898987876 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a Harshad number since it is a multiple of its sum of digits (79).

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 9898987796 and 9898987805.

It is not an unprimeable number, because it can be changed into a prime (9898987877) 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 3 ways as a sum of consecutive naturals, for example, 15662640 + ... + 15663271.

Almost surely, 2^9898987876 is an apocalyptic number.

It is an amenable number.

9898987876 is a deficient number, since it is larger than the sum of its proper divisors (7643522844).

9898987876 is a wasteful number, since it uses less digits than its factorization.

9898987876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31325994 (or 31325992 counting only the distinct ones).

The product of its digits is 877879296, while the sum is 79.

The square root of 9898987876 is about 99493.6574661923. The cubic root of 9898987876 is about 2147.1559927145.

The spelling of 9898987876 in words is "nine billion, eight hundred ninety-eight million, nine hundred eighty-seven thousand, eight hundred seventy-six".