12956249 has 2 divisors, whose sum is σ = 12956250. Its totient is φ = 12956248.

The previous prime is 12956191. The next prime is 12956257. The reversal of 12956249 is 94265921.

12956249 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., 12730624 + 225625 = 3568^2 + 475^2 .

It is a cyclic number.

It is not a de Polignac number, because 12956249 - 2⁸ = 12955993 is a prime.

It is a super-3 number, since 3×12956249³ (a number of 22 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12956269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6478124 + 6478125.

It is an arithmetic number, because the mean of its divisors is an integer number (6478125).

Almost surely, 2^12956249 is an apocalyptic number.

It is an amenable number.

12956249 is a deficient number, since it is larger than the sum of its proper divisors (1).

12956249 is an equidigital number, since it uses as much as digits as its factorization.

12956249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 38.

The square root of 12956249 is about 3599.4789900762. The cubic root of 12956249 is about 234.8693947580.

The spelling of 12956249 in words is "twelve million, nine hundred fifty-six thousand, two hundred forty-nine".