109988 has 12 divisors (see below), whose sum is σ = 198912. Its totient is φ = 53160.

The previous prime is 109987. The next prime is 110017. The reversal of 109988 is 889901.

It is a happy number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 109988.

It is not an unprimeable number, because it can be changed into a prime (109987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320 + ... + 567.

It is an arithmetic number, because the mean of its divisors is an integer number (16576).

2¹⁰⁹⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

109988 is a deficient number, since it is larger than the sum of its proper divisors (88924).

109988 is a wasteful number, since it uses less digits than its factorization.

109988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922 (or 920 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 109988 is about 331.6443878615. The cubic root of 109988 is about 47.9124561728.

The spelling of 109988 in words is "one hundred nine thousand, nine hundred eighty-eight".