99912717 has 16 divisors (see below), whose sum is σ = 148236480. Its totient is φ = 66510576.

The previous prime is 99912671. The next prime is 99912719. The reversal of 99912717 is 71721999.

It is not a de Polignac number, because 99912717 - 2⁶ = 99912653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99912719) 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 in 15 ways as a sum of consecutive naturals, for example, 19198 + ... + 23840.

It is an arithmetic number, because the mean of its divisors is an integer number (9264780).

Almost surely, 2^99912717 is an apocalyptic number.

It is an amenable number.

99912717 is a deficient number, since it is larger than the sum of its proper divisors (48323763).

99912717 is a wasteful number, since it uses less digits than its factorization.

99912717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5449 (or 5443 counting only the distinct ones).

The product of its digits is 71442, while the sum is 45.

The square root of 99912717 is about 9995.6348972939. The cubic root of 99912717 is about 464.0238001194.

The spelling of 99912717 in words is "ninety-nine million, nine hundred twelve thousand, seven hundred seventeen".