190899 has 6 divisors (see below), whose sum is σ = 275756. Its totient is φ = 127260.

The previous prime is 190891. The next prime is 190901. The reversal of 190899 is 998091.

It is not a de Polignac number, because 190899 - 2³ = 190891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190891) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 10597 + ... + 10614.

2¹⁹⁰⁸⁹⁹ is an apocalyptic number.

190899 is a deficient number, since it is larger than the sum of its proper divisors (84857).

190899 is a wasteful number, since it uses less digits than its factorization.

190899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21217 (or 21214 counting only the distinct ones).

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

The square root of 190899 is about 436.9199011261. The cubic root of 190899 is about 57.5794993595.

It can be divided in two parts, 190 and 899, that added together give a square (1089 = 33²).

The spelling of 190899 in words is "one hundred ninety thousand, eight hundred ninety-nine".