9099791797 has 2 divisors, whose sum is σ = 9099791798. Its totient is φ = 9099791796.

The previous prime is 9099791719. The next prime is 9099791821. The reversal of 9099791797 is 7971979909.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5007119121 + 4092672676 = 70761^2 + 63974^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9099791797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9099791707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4549895898 + 4549895899.

It is an arithmetic number, because the mean of its divisors is an integer number (4549895899).

Almost surely, 2^9099791797 is an apocalyptic number.

It is an amenable number.

9099791797 is a deficient number, since it is larger than the sum of its proper divisors (1).

9099791797 is an equidigital number, since it uses as much as digits as its factorization.

9099791797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20253807, while the sum is 67.

The square root of 9099791797 is about 95392.8288552132. The cubic root of 9099791797 is about 2087.7435562788.

The spelling of 9099791797 in words is "nine billion, ninety-nine million, seven hundred ninety-one thousand, seven hundred ninety-seven".