9888900 has 144 divisors (see below), whose sum is σ = 34747776. Its totient is φ = 2119680.

The previous prime is 9888889. The next prime is 9888929. The reversal of 9888900 is 98889.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 35562 + ... + 35838.

It is an arithmetic number, because the mean of its divisors is an integer number (241304).

Almost surely, 2^9888900 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 9888900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17373888).

9888900 is an abundant number, since it is smaller than the sum of its proper divisors (24858876).

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

9888900 is a wasteful number, since it uses less digits than its factorization.

9888900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 9888900 is about 3144.6621440148. The cubic root of 9888900 is about 214.6426369117.

Multiplying 9888900 by its reverse (98889), we get a square (977903432100 = 988890²).

9888900 divided by its reverse (98889) gives a square (100 = 10²).

The spelling of 9888900 in words is "nine million, eight hundred eighty-eight thousand, nine hundred".