12956291 has 8 divisors (see below), whose sum is σ = 13561344. Its totient is φ = 12354760.

The previous prime is 12956269. The next prime is 12956299. The reversal of 12956291 is 19265921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12956291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12956299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9260 + ... + 10566.

It is an arithmetic number, because the mean of its divisors is an integer number (1695168).

Almost surely, 2^12956291 is an apocalyptic number.

12956291 is a deficient number, since it is larger than the sum of its proper divisors (605053).

12956291 is a wasteful number, since it uses less digits than its factorization.

12956291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761.

The product of its digits is 9720, while the sum is 35.

The square root of 12956291 is about 3599.4848242492. The cubic root of 12956291 is about 234.8696485481.

The spelling of 12956291 in words is "twelve million, nine hundred fifty-six thousand, two hundred ninety-one".