199936244313989 has 2 divisors, whose sum is σ = 199936244313990. Its totient is φ = 199936244313988.

The previous prime is 199936244313973. The next prime is 199936244314057. The reversal of 199936244313989 is 989313442639991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164006314185025 + 35929930128964 = 12806495^2 + 5994158^2 .

It is a cyclic number.

It is not a de Polignac number, because 199936244313989 - 2⁴ = 199936244313973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199936244313929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99968122156994 + 99968122156995.

It is an arithmetic number, because the mean of its divisors is an integer number (99968122156995).

Almost surely, 2^{199936244313989} is an apocalyptic number.

It is an amenable number.

199936244313989 is a deficient number, since it is larger than the sum of its proper divisors (1).

199936244313989 is an equidigital number, since it uses as much as digits as its factorization.

199936244313989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2448880128, while the sum is 80.

The spelling of 199936244313989 in words is "one hundred ninety-nine trillion, nine hundred thirty-six billion, two hundred forty-four million, three hundred thirteen thousand, nine hundred eighty-nine".