195839 has 8 divisors (see below), whose sum is σ = 226848. Its totient is φ = 165600.

The previous prime is 195817. The next prime is 195863. The reversal of 195839 is 938591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 195839 - 2¹⁶ = 130303 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 195799 and 195808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195809) 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, 569 + ... + 845.

It is an arithmetic number, because the mean of its divisors is an integer number (28356).

2¹⁹⁵⁸³⁹ is an apocalyptic number.

195839 is a deficient number, since it is larger than the sum of its proper divisors (31009).

195839 is a wasteful number, since it uses less digits than its factorization.

195839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385.

The product of its digits is 9720, while the sum is 35.

The square root of 195839 is about 442.5370041025. The cubic root of 195839 is about 58.0719479701.

The spelling of 195839 in words is "one hundred ninety-five thousand, eight hundred thirty-nine".