195479 has 2 divisors, whose sum is σ = 195480. Its totient is φ = 195478.

The previous prime is 195469. The next prime is 195493. The reversal of 195479 is 974591.

It is a weak prime.

It is an emirp because it is prime and its reverse (974591) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195479 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195469) 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 as a sum of consecutive naturals, namely, 97739 + 97740.

It is an arithmetic number, because the mean of its divisors is an integer number (97740).

2¹⁹⁵⁴⁷⁹ is an apocalyptic number.

195479 is a deficient number, since it is larger than the sum of its proper divisors (1).

195479 is an equidigital number, since it uses as much as digits as its factorization.

195479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11340, while the sum is 35.

The square root of 195479 is about 442.1300713591. The cubic root of 195479 is about 58.0363426610.

The spelling of 195479 in words is "one hundred ninety-five thousand, four hundred seventy-nine".