9898987800 has 192 divisors, whose sum is σ = 34991822880. Its totient is φ = 2293309440.

The previous prime is 9898987799. The next prime is 9898987811. The reversal of 9898987800 is 87898989.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 95274 + ... + 169926.

Almost surely, 2^9898987800 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 9898987800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17495911440).

9898987800 is an abundant number, since it is smaller than the sum of its proper divisors (25092835080).

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

9898987800 is a wasteful number, since it uses less digits than its factorization.

9898987800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74702 (or 74693 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 66.

The square root of 9898987800 is about 99493.6570842584. The cubic root of 9898987800 is about 2147.1559872196.

The spelling of 9898987800 in words is "nine billion, eight hundred ninety-eight million, nine hundred eighty-seven thousand, eight hundred".