189099 has 6 divisors (see below), whose sum is σ = 273156. Its totient is φ = 126060.

The previous prime is 189067. The next prime is 189127. The reversal of 189099 is 990981.

It is not a de Polignac number, because 189099 - 2⁵ = 189067 is a prime.

It is an Ulam number.

189099 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (189019) 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, 10497 + ... + 10514.

It is an arithmetic number, because the mean of its divisors is an integer number (45526).

2¹⁸⁹⁰⁹⁹ is an apocalyptic number.

189099 is a deficient number, since it is larger than the sum of its proper divisors (84057).

189099 is a wasteful number, since it uses less digits than its factorization.

189099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21017 (or 21014 counting only the distinct ones).

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

The square root of 189099 is about 434.8551482965. The cubic root of 189099 is about 57.3979538499.

The spelling of 189099 in words is "one hundred eighty-nine thousand, ninety-nine".