9794497897 has 2 divisors, whose sum is σ = 9794497898. Its totient is φ = 9794497896.

The previous prime is 9794497877. The next prime is 9794497907. The reversal of 9794497897 is 7987944979.

9794497897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6473972521 + 3320525376 = 80461^2 + 57624^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9794497897 is a prime.

It is not a weakly prime, because it can be changed into another prime (9794497847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4897248948 + 4897248949.

It is an arithmetic number, because the mean of its divisors is an integer number (4897248949).

Almost surely, 2^9794497897 is an apocalyptic number.

It is an amenable number.

9794497897 is a deficient number, since it is larger than the sum of its proper divisors (1).

9794497897 is an equidigital number, since it uses as much as digits as its factorization.

9794497897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288054144, while the sum is 73.

The square root of 9794497897 is about 98967.1556477198. The cubic root of 9794497897 is about 2139.5743976312.

The spelling of 9794497897 in words is "nine billion, seven hundred ninety-four million, four hundred ninety-seven thousand, eight hundred ninety-seven".