196959799 has 2 divisors, whose sum is σ = 196959800. Its totient is φ = 196959798.

The previous prime is 196959743. The next prime is 196959811. The reversal of 196959799 is 997959691.

It is a strong prime.

It is an emirp because it is prime and its reverse (997959691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 196959799 - 2¹¹ = 196957751 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 196959799.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196959199) 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, 98479899 + 98479900.

It is an arithmetic number, because the mean of its divisors is an integer number (98479900).

Almost surely, 2^196959799 is an apocalyptic number.

196959799 is a deficient number, since it is larger than the sum of its proper divisors (1).

196959799 is an equidigital number, since it uses as much as digits as its factorization.

196959799 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 196959799 is about 14034.2366732217. The cubic root of 196959799 is about 581.8252044526.

The spelling of 196959799 in words is "one hundred ninety-six million, nine hundred fifty-nine thousand, seven hundred ninety-nine".