99988888717 has 2 divisors, whose sum is σ = 99988888718. Its totient is φ = 99988888716.

The previous prime is 99988888631. The next prime is 99988888723. The reversal of 99988888717 is 71788888999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85314231396 + 14674657321 = 292086^2 + 121139^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99988888717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99988888817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49994444358 + 49994444359.

It is an arithmetic number, because the mean of its divisors is an integer number (49994444359).

Almost surely, 2^99988888717 is an apocalyptic number.

It is an amenable number.

99988888717 is a deficient number, since it is larger than the sum of its proper divisors (1).

99988888717 is an equidigital number, since it uses as much as digits as its factorization.

99988888717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1170505728, while the sum is 82.

The spelling of 99988888717 in words is "ninety-nine billion, nine hundred eighty-eight million, eight hundred eighty-eight thousand, seven hundred seventeen".