12839687 has 12 divisors (see below), whose sum is σ = 15489936. Its totient is φ = 10424160.

The previous prime is 12839677. The next prime is 12839689. The reversal of 12839687 is 78693821.

It is a de Polignac number, because none of the positive numbers 2^k-12839687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12839689) 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 11 ways as a sum of consecutive naturals, for example, 14 + ... + 5067.

It is an arithmetic number, because the mean of its divisors is an integer number (1290828).

Almost surely, 2^12839687 is an apocalyptic number.

12839687 is a deficient number, since it is larger than the sum of its proper divisors (2650249).

12839687 is an equidigital number, since it uses as much as digits as its factorization.

12839687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5126 (or 5107 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 12839687 is about 3583.2508982766. The cubic root of 12839687 is about 234.1629310639.

The spelling of 12839687 in words is "twelve million, eight hundred thirty-nine thousand, six hundred eighty-seven".