12078791 has 2 divisors, whose sum is σ = 12078792. Its totient is φ = 12078790.

The previous prime is 12078779. The next prime is 12078853. The reversal of 12078791 is 19787021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12078791 - 2⁶ = 12078727 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 (12078701) 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, 6039395 + 6039396.

It is an arithmetic number, because the mean of its divisors is an integer number (6039396).

Almost surely, 2^12078791 is an apocalyptic number.

12078791 is a deficient number, since it is larger than the sum of its proper divisors (1).

12078791 is an equidigital number, since it uses as much as digits as its factorization.

12078791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 12078791 is about 3475.4555097138. The cubic root of 12078791 is about 229.4428290468.

The spelling of 12078791 in words is "twelve million, seventy-eight thousand, seven hundred ninety-one".