9956259197 has 2 divisors, whose sum is σ = 9956259198. Its totient is φ = 9956259196.

The previous prime is 9956259169. The next prime is 9956259199. The reversal of 9956259197 is 7919526599.

It is a happy number.

9956259197 is digitally balanced in base 3, 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., 9956247961 + 11236 = 99781^2 + 106^2 .

It is an emirp because it is prime and its reverse (7919526599) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9956259197 - 2⁶ = 9956259133 is a prime.

Together with 9956259199, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9956259199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4978129598 + 4978129599.

It is an arithmetic number, because the mean of its divisors is an integer number (4978129599).

Almost surely, 2^9956259197 is an apocalyptic number.

It is an amenable number.

9956259197 is a deficient number, since it is larger than the sum of its proper divisors (1).

9956259197 is an equidigital number, since it uses as much as digits as its factorization.

9956259197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13778100, while the sum is 62.

The square root of 9956259197 is about 99781.0563032884. The cubic root of 9956259197 is about 2151.2888754368.

The spelling of 9956259197 in words is "nine billion, nine hundred fifty-six million, two hundred fifty-nine thousand, one hundred ninety-seven".