195399 has 8 divisors (see below), whose sum is σ = 289520. Its totient is φ = 130248.

The previous prime is 195389. The next prime is 195401. The reversal of 195399 is 993591.

It is not a de Polignac number, because 195399 - 2⁷ = 195271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3592 + ... + 3645.

It is an arithmetic number, because the mean of its divisors is an integer number (36190).

2¹⁹⁵³⁹⁹ is an apocalyptic number.

195399 is a deficient number, since it is larger than the sum of its proper divisors (94121).

195399 is an equidigital number, since it uses as much as digits as its factorization.

195399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7246 (or 7240 counting only the distinct ones).

The product of its digits is 10935, while the sum is 36.

The square root of 195399 is about 442.0395909871. The cubic root of 195399 is about 58.0284244346.

The spelling of 195399 in words is "one hundred ninety-five thousand, three hundred ninety-nine".