99319044989 has 2 divisors, whose sum is σ = 99319044990. Its totient is φ = 99319044988.

The previous prime is 99319044977. The next prime is 99319044997. The reversal of 99319044989 is 98944091399.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70202741764 + 29116303225 = 264958^2 + 170635^2 .

It is a cyclic number.

It is not a de Polignac number, because 99319044989 - 2⁴ = 99319044973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99319044949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49659522494 + 49659522495.

It is an arithmetic number, because the mean of its divisors is an integer number (49659522495).

Almost surely, 2^99319044989 is an apocalyptic number.

It is an amenable number.

99319044989 is a deficient number, since it is larger than the sum of its proper divisors (1).

99319044989 is an equidigital number, since it uses as much as digits as its factorization.

99319044989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22674816, while the sum is 65.

The spelling of 99319044989 in words is "ninety-nine billion, three hundred nineteen million, forty-four thousand, nine hundred eighty-nine".