9713998391 has 2 divisors, whose sum is σ = 9713998392. Its totient is φ = 9713998390.

The previous prime is 9713998379. The next prime is 9713998433. The reversal of 9713998391 is 1938993179.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9713998391 - 2¹⁰ = 9713997367 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9713998391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9713998321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4856999195 + 4856999196.

It is an arithmetic number, because the mean of its divisors is an integer number (4856999196).

Almost surely, 2^9713998391 is an apocalyptic number.

9713998391 is a deficient number, since it is larger than the sum of its proper divisors (1).

9713998391 is an equidigital number, since it uses as much as digits as its factorization.

9713998391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3306744, while the sum is 59.

The square root of 9713998391 is about 98559.6184600975. The cubic root of 9713998391 is about 2133.6966518719.

The spelling of 9713998391 in words is "nine billion, seven hundred thirteen million, nine hundred ninety-eight thousand, three hundred ninety-one".