199996759 has 2 divisors, whose sum is σ = 199996760. Its totient is φ = 199996758.

The previous prime is 199996757. The next prime is 199996813. The reversal of 199996759 is 957699991.

It is a weak prime.

It is an emirp because it is prime and its reverse (957699991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199996759 - 2¹ = 199996757 is a prime.

It is a super-2 number, since 2×199996759² = 79997407221008162, which contains 22 as substring.

Together with 199996757, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 199996759.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199996757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99998379 + 99998380.

It is an arithmetic number, because the mean of its divisors is an integer number (99998380).

Almost surely, 2^199996759 is an apocalyptic number.

199996759 is a deficient number, since it is larger than the sum of its proper divisors (1).

199996759 is an equidigital number, since it uses as much as digits as its factorization.

199996759 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12400290, while the sum is 64.

The square root of 199996759 is about 14142.0210366128. The cubic root of 199996759 is about 584.8003887117.

The spelling of 199996759 in words is "one hundred ninety-nine million, nine hundred ninety-six thousand, seven hundred fifty-nine".