9900000079 has 2 divisors, whose sum is σ = 9900000080. Its totient is φ = 9900000078.

The previous prime is 9900000043. The next prime is 9900000083. The reversal of 9900000079 is 9700000099.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9900000079 - 2⁹ = 9899999567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9900000029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4950000039 + 4950000040.

It is an arithmetic number, because the mean of its divisors is an integer number (4950000040).

Almost surely, 2^9900000079 is an apocalyptic number.

9900000079 is a deficient number, since it is larger than the sum of its proper divisors (1).

9900000079 is an equidigital number, since it uses as much as digits as its factorization.

9900000079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5103, while the sum is 34.

The square root of 9900000079 is about 99498.7441076519. The cubic root of 9900000079 is about 2147.2291747304.

The spelling of 9900000079 in words is "nine billion, nine hundred million, seventy-nine", and thus it is an aban number.