99136217 has 2 divisors, whose sum is σ = 99136218. Its totient is φ = 99136216.

The previous prime is 99136201. The next prime is 99136229. The reversal of 99136217 is 71263199.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73085401 + 26050816 = 8549^2 + 5104^2 .

It is a cyclic number.

It is not a de Polignac number, because 99136217 - 2⁴ = 99136201 is a prime.

It is not a weakly prime, because it can be changed into another prime (99136277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49568108 + 49568109.

It is an arithmetic number, because the mean of its divisors is an integer number (49568109).

Almost surely, 2^99136217 is an apocalyptic number.

It is an amenable number.

99136217 is a deficient number, since it is larger than the sum of its proper divisors (1).

99136217 is an equidigital number, since it uses as much as digits as its factorization.

99136217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 38.

The square root of 99136217 is about 9956.7171798741. The cubic root of 99136217 is about 462.8185749603.

The spelling of 99136217 in words is "ninety-nine million, one hundred thirty-six thousand, two hundred seventeen".