12893791 has 2 divisors, whose sum is σ = 12893792. Its totient is φ = 12893790.

The previous prime is 12893767. The next prime is 12893809. The reversal of 12893791 is 19739821.

It is a strong prime.

It is an emirp because it is prime and its reverse (19739821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12893791 - 2¹⁹ = 12369503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12893291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6446895 + 6446896.

It is an arithmetic number, because the mean of its divisors is an integer number (6446896).

Almost surely, 2^12893791 is an apocalyptic number.

12893791 is a deficient number, since it is larger than the sum of its proper divisors (1).

12893791 is an equidigital number, since it uses as much as digits as its factorization.

12893791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 40.

The square root of 12893791 is about 3590.7925309046. The cubic root of 12893791 is about 234.4913761845.

The spelling of 12893791 in words is "twelve million, eight hundred ninety-three thousand, seven hundred ninety-one".