12956117 has 2 divisors, whose sum is σ = 12956118. Its totient is φ = 12956116.

The previous prime is 12956101. The next prime is 12956131. The reversal of 12956117 is 71165921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12859396 + 96721 = 3586^2 + 311^2 .

It is a cyclic number.

It is not a de Polignac number, because 12956117 - 2⁴ = 12956101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12956137) 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, 6478058 + 6478059.

It is an arithmetic number, because the mean of its divisors is an integer number (6478059).

Almost surely, 2^12956117 is an apocalyptic number.

It is an amenable number.

12956117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12956117 is an equidigital number, since it uses as much as digits as its factorization.

12956117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 32.

The square root of 12956117 is about 3599.4606540425. The cubic root of 12956117 is about 234.8685971283.

The spelling of 12956117 in words is "twelve million, nine hundred fifty-six thousand, one hundred seventeen".