99707291 has 2 divisors, whose sum is σ = 99707292. Its totient is φ = 99707290.

The previous prime is 99707281. The next prime is 99707297. The reversal of 99707291 is 19270799.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99707291 - 2²⁶ = 32598427 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99707297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49853645 + 49853646.

It is an arithmetic number, because the mean of its divisors is an integer number (49853646).

Almost surely, 2^99707291 is an apocalyptic number.

99707291 is a deficient number, since it is larger than the sum of its proper divisors (1).

99707291 is an equidigital number, since it uses as much as digits as its factorization.

99707291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71442, while the sum is 44.

The square root of 99707291 is about 9985.3538244771. The cubic root of 99707291 is about 463.7055624942.

The spelling of 99707291 in words is "ninety-nine million, seven hundred seven thousand, two hundred ninety-one".