9917958793 has 2 divisors, whose sum is σ = 9917958794. Its totient is φ = 9917958792.

The previous prime is 9917958769. The next prime is 9917958803. The reversal of 9917958793 is 3978597199.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5614205184 + 4303753609 = 74928^2 + 65603^2 .

It is a cyclic number.

It is not a de Polignac number, because 9917958793 - 2⁵ = 9917958761 is a prime.

It is not a weakly prime, because it can be changed into another prime (9917956793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4958979396 + 4958979397.

It is an arithmetic number, because the mean of its divisors is an integer number (4958979397).

Almost surely, 2^9917958793 is an apocalyptic number.

It is an amenable number.

9917958793 is a deficient number, since it is larger than the sum of its proper divisors (1).

9917958793 is an equidigital number, since it uses as much as digits as its factorization.

9917958793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38578680, while the sum is 67.

The square root of 9917958793 is about 99588.9491509977. The cubic root of 9917958793 is about 2148.5267565761.

The spelling of 9917958793 in words is "nine billion, nine hundred seventeen million, nine hundred fifty-eight thousand, seven hundred ninety-three".