99718417 has 2 divisors, whose sum is σ = 99718418. Its totient is φ = 99718416.

The previous prime is 99718391. The next prime is 99718427. The reversal of 99718417 is 71481799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54774801 + 44943616 = 7401^2 + 6704^2 .

It is an emirp because it is prime and its reverse (71481799) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99718417 is a prime.

It is not a weakly prime, because it can be changed into another prime (99718427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49859208 + 49859209.

It is an arithmetic number, because the mean of its divisors is an integer number (49859209).

Almost surely, 2^99718417 is an apocalyptic number.

It is an amenable number.

99718417 is a deficient number, since it is larger than the sum of its proper divisors (1).

99718417 is an equidigital number, since it uses as much as digits as its factorization.

99718417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 46.

The square root of 99718417 is about 9985.9109248981. The cubic root of 99718417 is about 463.7228096321.

The spelling of 99718417 in words is "ninety-nine million, seven hundred eighteen thousand, four hundred seventeen".