12456791 has 2 divisors, whose sum is σ = 12456792. Its totient is φ = 12456790.

The previous prime is 12456751. The next prime is 12456797. The reversal of 12456791 is 19765421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12456791 - 2¹⁸ = 12194647 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12456797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6228395 + 6228396.

It is an arithmetic number, because the mean of its divisors is an integer number (6228396).

Almost surely, 2^12456791 is an apocalyptic number.

12456791 is a deficient number, since it is larger than the sum of its proper divisors (1).

12456791 is an equidigital number, since it uses as much as digits as its factorization.

12456791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 12456791 is about 3529.4179406809. The cubic root of 12456791 is about 231.8117217498.

The spelling of 12456791 in words is "twelve million, four hundred fifty-six thousand, seven hundred ninety-one".