195399359 has 2 divisors, whose sum is σ = 195399360. Its totient is φ = 195399358.

The previous prime is 195399349. The next prime is 195399367. The reversal of 195399359 is 953993591.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195399359 is a prime.

It is a super-2 number, since 2×195399359² = 76361818995221762, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 195399359.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195399349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97699679 + 97699680.

It is an arithmetic number, because the mean of its divisors is an integer number (97699680).

Almost surely, 2^195399359 is an apocalyptic number.

195399359 is a deficient number, since it is larger than the sum of its proper divisors (1).

195399359 is an equidigital number, since it uses as much as digits as its factorization.

195399359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1476225, while the sum is 53.

The square root of 195399359 is about 13978.5320760086. The cubic root of 195399359 is about 580.2845997247.

The spelling of 195399359 in words is "one hundred ninety-five million, three hundred ninety-nine thousand, three hundred fifty-nine".