108899940 has 144 divisors (see below), whose sum is σ = 329995008. Its totient is φ = 26813952.

The previous prime is 108899939. The next prime is 108899957. The reversal of 108899940 is 49998801.

It is a self number, because there is not a number n which added to its sum of digits gives 108899940.

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, 1491744 + ... + 1491816.

It is an arithmetic number, because the mean of its divisors is an integer number (2291632).

Almost surely, 2^108899940 is an apocalyptic number.

108899940 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 108899940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164997504).

108899940 is an abundant number, since it is smaller than the sum of its proper divisors (221095068).

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

108899940 is a wasteful number, since it uses less digits than its factorization.

108899940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 48.

The square root of 108899940 is about 10435.5134037574. The cubic root of 108899940 is about 477.5394044764.

The spelling of 108899940 in words is "one hundred eight million, eight hundred ninety-nine thousand, nine hundred forty".