109899 has 6 divisors (see below), whose sum is σ = 158756. Its totient is φ = 73260.

The previous prime is 109897. The next prime is 109903. The reversal of 109899 is 998901.

It is not a de Polignac number, because 109899 - 2¹ = 109897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109891) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6097 + ... + 6114.

2¹⁰⁹⁸⁹⁹ is an apocalyptic number.

109899 is a deficient number, since it is larger than the sum of its proper divisors (48857).

109899 is a wasteful number, since it uses less digits than its factorization.

109899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12217 (or 12214 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The square root of 109899 is about 331.5101808391. The cubic root of 109899 is about 47.8995294314.

The spelling of 109899 in words is "one hundred nine thousand, eight hundred ninety-nine".