99717227 has 2 divisors, whose sum is σ = 99717228. Its totient is φ = 99717226.

The previous prime is 99717217. The next prime is 99717271. The reversal of 99717227 is 72271799.

It is an a-pointer prime, because the next prime (99717271) can be obtained adding 99717227 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99717227 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99717217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49858613 + 49858614.

It is an arithmetic number, because the mean of its divisors is an integer number (49858614).

Almost surely, 2^99717227 is an apocalyptic number.

99717227 is a deficient number, since it is larger than the sum of its proper divisors (1).

99717227 is an equidigital number, since it uses as much as digits as its factorization.

99717227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 111132, while the sum is 44.

The square root of 99717227 is about 9985.8513407721. The cubic root of 99717227 is about 463.7209649968.

The spelling of 99717227 in words is "ninety-nine million, seven hundred seventeen thousand, two hundred twenty-seven".