9705396991 has 2 divisors, whose sum is σ = 9705396992. Its totient is φ = 9705396990.

The previous prime is 9705396949. The next prime is 9705397061. The reversal of 9705396991 is 1996935079.

9705396991 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (1996935079) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9705396991 - 2⁷ = 9705396863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9705397991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4852698495 + 4852698496.

It is an arithmetic number, because the mean of its divisors is an integer number (4852698496).

Almost surely, 2^9705396991 is an apocalyptic number.

9705396991 is a deficient number, since it is larger than the sum of its proper divisors (1).

9705396991 is an equidigital number, since it uses as much as digits as its factorization.

9705396991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4133430, while the sum is 58.

The square root of 9705396991 is about 98515.9732784486. The cubic root of 9705396991 is about 2133.0666950741.

The spelling of 9705396991 in words is "nine billion, seven hundred five million, three hundred ninety-six thousand, nine hundred ninety-one".