8491700099 has 2 divisors, whose sum is σ = 8491700100. Its totient is φ = 8491700098.

The previous prime is 8491700057. The next prime is 8491700101. The reversal of 8491700099 is 9900071948.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8491700099 - 2³² = 4196732803 is a prime.

Together with 8491700101, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8491700299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4245850049 + 4245850050.

It is an arithmetic number, because the mean of its divisors is an integer number (4245850050).

Almost surely, 2^8491700099 is an apocalyptic number.

8491700099 is a deficient number, since it is larger than the sum of its proper divisors (1).

8491700099 is an equidigital number, since it uses as much as digits as its factorization.

8491700099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 8491700099 is about 92150.4210462437. The cubic root of 8491700099 is about 2040.1630731968.

The spelling of 8491700099 in words is "eight billion, four hundred ninety-one million, seven hundred thousand, ninety-nine".