12906839 has 4 divisors (see below), whose sum is σ = 14080200. Its totient is φ = 11733480.

The previous prime is 12906823. The next prime is 12906847. The reversal of 12906839 is 93860921.

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

It is not a de Polignac number, because 12906839 - 2⁴ = 12906823 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 (12906139) 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 in 3 ways as a sum of consecutive naturals, for example, 586664 + ... + 586685.

It is an arithmetic number, because the mean of its divisors is an integer number (3520050).

Almost surely, 2^12906839 is an apocalyptic number.

12906839 is a deficient number, since it is larger than the sum of its proper divisors (1173361).

12906839 is a wasteful number, since it uses less digits than its factorization.

12906839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173360.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 12906839 is about 3592.6089405890. The cubic root of 12906839 is about 234.5704481444.

The spelling of 12906839 in words is "twelve million, nine hundred six thousand, eight hundred thirty-nine".