12657339 has 12 divisors (see below), whose sum is σ = 18313672. Its totient is φ = 8424000.

The previous prime is 12657319. The next prime is 12657341. The reversal of 12657339 is 93375621.

It is not a de Polignac number, because 12657339 - 2¹⁵ = 12624571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12657319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9939 + ... + 11139.

Almost surely, 2^12657339 is an apocalyptic number.

12657339 is a deficient number, since it is larger than the sum of its proper divisors (5656333).

12657339 is a wasteful number, since it uses less digits than its factorization.

12657339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2378 (or 2375 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 12657339 is about 3557.7154186360. The cubic root of 12657339 is about 233.0491217572.

It can be divided in two parts, 12657 and 339, that added together give a square (12996 = 114²).

The spelling of 12657339 in words is "twelve million, six hundred fifty-seven thousand, three hundred thirty-nine".