99287085917 has 2 divisors, whose sum is σ = 99287085918. Its totient is φ = 99287085916.

The previous prime is 99287085857. The next prime is 99287085943. The reversal of 99287085917 is 71958078299.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98893896676 + 393189241 = 314474^2 + 19829^2 .

It is a cyclic number.

It is not a de Polignac number, because 99287085917 - 2⁶ = 99287085853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99287081917) 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, 49643542958 + 49643542959.

It is an arithmetic number, because the mean of its divisors is an integer number (49643542959).

Almost surely, 2^99287085917 is an apocalyptic number.

It is an amenable number.

99287085917 is a deficient number, since it is larger than the sum of its proper divisors (1).

99287085917 is an equidigital number, since it uses as much as digits as its factorization.

99287085917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22861440, while the sum is 65.

The spelling of 99287085917 in words is "ninety-nine billion, two hundred eighty-seven million, eighty-five thousand, nine hundred seventeen".