12839791 has 4 divisors (see below), whose sum is σ = 13002400. Its totient is φ = 12677184.

The previous prime is 12839767. The next prime is 12839803. The reversal of 12839791 is 19793821.

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

It is a cyclic number.

It is not a de Polignac number, because 12839791 - 2⁹ = 12839279 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 (12830791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81186 + ... + 81343.

It is an arithmetic number, because the mean of its divisors is an integer number (3250600).

Almost surely, 2^12839791 is an apocalyptic number.

12839791 is a deficient number, since it is larger than the sum of its proper divisors (162609).

12839791 is an equidigital number, since it uses as much as digits as its factorization.

12839791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162608.

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

The square root of 12839791 is about 3583.2654102090. The cubic root of 12839791 is about 234.1635632932.

The spelling of 12839791 in words is "twelve million, eight hundred thirty-nine thousand, seven hundred ninety-one".