9717949723 has 2 divisors, whose sum is σ = 9717949724. Its totient is φ = 9717949722.

The previous prime is 9717949721. The next prime is 9717949777. The reversal of 9717949723 is 3279497179.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9717949723 - 2¹ = 9717949721 is a prime.

Together with 9717949721, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9717949721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4858974861 + 4858974862.

It is an arithmetic number, because the mean of its divisors is an integer number (4858974862).

Almost surely, 2^9717949723 is an apocalyptic number.

9717949723 is a deficient number, since it is larger than the sum of its proper divisors (1).

9717949723 is an equidigital number, since it uses as much as digits as its factorization.

9717949723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6001128, while the sum is 58.

The square root of 9717949723 is about 98579.6618121608. The cubic root of 9717949723 is about 2133.9859183042.

The spelling of 9717949723 in words is "nine billion, seven hundred seventeen million, nine hundred forty-nine thousand, seven hundred twenty-three".