12896791 has 4 divisors (see below), whose sum is σ = 13024584. Its totient is φ = 12769000.

The previous prime is 12896773. The next prime is 12896797. The reversal of 12896791 is 19769821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12896791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12896797) 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 3 ways as a sum of consecutive naturals, for example, 63745 + ... + 63946.

It is an arithmetic number, because the mean of its divisors is an integer number (3256146).

Almost surely, 2^12896791 is an apocalyptic number.

12896791 is a deficient number, since it is larger than the sum of its proper divisors (127793).

12896791 is a wasteful number, since it uses less digits than its factorization.

12896791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127792.

The product of its digits is 54432, while the sum is 43.

The square root of 12896791 is about 3591.2102416873. The cubic root of 12896791 is about 234.5095611536.

The spelling of 12896791 in words is "twelve million, eight hundred ninety-six thousand, seven hundred ninety-one".