109989988 has 12 divisors (see below), whose sum is σ = 192649660. Its totient is φ = 54947232.

The previous prime is 109989973. The next prime is 109990007. The reversal of 109989988 is 889989901.

It can be written as a sum of positive squares in 2 ways, for example, as 56670784 + 53319204 = 7528^2 + 7302^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6483 + ... + 16186.

Almost surely, 2^109989988 is an apocalyptic number.

It is an amenable number.

109989988 is a deficient number, since it is larger than the sum of its proper divisors (82659672).

109989988 is a wasteful number, since it uses less digits than its factorization.

109989988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23886 (or 23884 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 61.

The square root of 109989988 is about 10487.6111674680. The cubic root of 109989988 is about 479.1274483878.

The spelling of 109989988 in words is "one hundred nine million, nine hundred eighty-nine thousand, nine hundred eighty-eight".