195397 has 4 divisors (see below), whose sum is σ = 200716. Its totient is φ = 190080.

The previous prime is 195389. The next prime is 195401. The reversal of 195397 is 793591.

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

It can be written as a sum of positive squares in 2 ways, for example, as 101761 + 93636 = 319^2 + 306^2 .

It is a cyclic number.

It is not a de Polignac number, because 195397 - 2³ = 195389 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 (195197) 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 3 ways as a sum of consecutive naturals, for example, 2604 + ... + 2677.

It is an arithmetic number, because the mean of its divisors is an integer number (50179).

2¹⁹⁵³⁹⁷ is an apocalyptic number.

It is an amenable number.

195397 is a deficient number, since it is larger than the sum of its proper divisors (5319).

195397 is an equidigital number, since it uses as much as digits as its factorization.

195397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5318.

The product of its digits is 8505, while the sum is 34.

The square root of 195397 is about 442.0373287405. The cubic root of 195397 is about 58.0282264513.

The spelling of 195397 in words is "one hundred ninety-five thousand, three hundred ninety-seven".