9956897 has 2 divisors, whose sum is σ = 9956898. Its totient is φ = 9956896.

The previous prime is 9956873. The next prime is 9956909. The reversal of 9956897 is 7986599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8755681 + 1201216 = 2959^2 + 1096^2 .

It is an emirp because it is prime and its reverse (7986599) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9956897 - 2⁸ = 9956641 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 9² + 9⁷ + 5⁷ + 6⁷ + 8⁵ + 9⁷ + 7² .

It is not a weakly prime, because it can be changed into another prime (9956867) 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, 4978448 + 4978449.

It is an arithmetic number, because the mean of its divisors is an integer number (4978449).

Almost surely, 2^9956897 is an apocalyptic number.

It is an amenable number.

9956897 is a deficient number, since it is larger than the sum of its proper divisors (1).

9956897 is an equidigital number, since it uses as much as digits as its factorization.

9956897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1224720, while the sum is 53.

The square root of 9956897 is about 3155.4551177287. The cubic root of 9956897 is about 215.1334812007.

The spelling of 9956897 in words is "nine million, nine hundred fifty-six thousand, eight hundred ninety-seven".