108989900 has 36 divisors (see below), whose sum is σ = 238239960. Its totient is φ = 43276800.

The previous prime is 108989891. The next prime is 108989921. The reversal of 108989900 is 9989801.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9980 + ... + 17820.

Almost surely, 2^108989900 is an apocalyptic number.

108989900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 108989900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119119980).

108989900 is an abundant number, since it is smaller than the sum of its proper divisors (129250060).

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

108989900 is a wasteful number, since it uses less digits than its factorization.

108989900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7994 (or 7987 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 44.

The square root of 108989900 is about 10439.8227954310. The cubic root of 108989900 is about 477.6708634437.

Subtracting from 108989900 its reverse (9989801), we obtain a palindrome (99000099).

The spelling of 108989900 in words is "one hundred eight million, nine hundred eighty-nine thousand, nine hundred".