195799 has 4 divisors (see below), whose sum is σ = 204336. Its totient is φ = 187264.

The previous prime is 195791. The next prime is 195809. The reversal of 195799 is 997591.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 195799 - 2³ = 195791 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4234 + ... + 4279.

It is an arithmetic number, because the mean of its divisors is an integer number (51084).

2¹⁹⁵⁷⁹⁹ is an apocalyptic number.

195799 is a deficient number, since it is larger than the sum of its proper divisors (8537).

195799 is an equidigital number, since it uses as much as digits as its factorization.

195799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8536.

The product of its digits is 25515, while the sum is 40.

The square root of 195799 is about 442.4918078338. The cubic root of 195799 is about 58.0679939806.

The spelling of 195799 in words is "one hundred ninety-five thousand, seven hundred ninety-nine".