109992 has 16 divisors (see below), whose sum is σ = 275040. Its totient is φ = 36656.

The previous prime is 109987. The next prime is 110017. The reversal of 109992 is 299901.

It is a plaindrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2268 + ... + 2315.

It is an arithmetic number, because the mean of its divisors is an integer number (17190).

2¹⁰⁹⁹⁹² is an apocalyptic number.

109992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

109992 is an abundant number, since it is smaller than the sum of its proper divisors (165048).

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

109992 is a wasteful number, since it uses less digits than its factorization.

109992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4592 (or 4588 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 109992 is about 331.6504183625. The cubic root of 109992 is about 47.9130369861.

The spelling of 109992 in words is "one hundred nine thousand, nine hundred ninety-two".