195969 has 4 divisors (see below), whose sum is σ = 261296. Its totient is φ = 130644.

The previous prime is 195967. The next prime is 195971. The reversal of 195969 is 969591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (195967) and next prime (195971).

It is not a de Polignac number, because 195969 - 2¹ = 195967 is a prime.

It is a super-2 number, since 2×195969² = 76807697922, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (195967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32659 + ... + 32664.

It is an arithmetic number, because the mean of its divisors is an integer number (65324).

2¹⁹⁵⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

195969 is a deficient number, since it is larger than the sum of its proper divisors (65327).

195969 is an equidigital number, since it uses as much as digits as its factorization.

195969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65326.

The product of its digits is 21870, while the sum is 39.

The square root of 195969 is about 442.6838601079. The cubic root of 195969 is about 58.0847947191.

The spelling of 195969 in words is "one hundred ninety-five thousand, nine hundred sixty-nine".