12839387 has 4 divisors (see below), whose sum is σ = 14006616. Its totient is φ = 11672160.

The previous prime is 12839381. The next prime is 12839401. The reversal of 12839387 is 78393821.

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 12839387 - 2⁴ = 12839371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12839381) 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, 583598 + ... + 583619.

It is an arithmetic number, because the mean of its divisors is an integer number (3501654).

Almost surely, 2^12839387 is an apocalyptic number.

12839387 is a deficient number, since it is larger than the sum of its proper divisors (1167229).

12839387 is a wasteful number, since it uses less digits than its factorization.

12839387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167228.

The product of its digits is 72576, while the sum is 41.

The square root of 12839387 is about 3583.2090366039. The cubic root of 12839387 is about 234.1611073064.

The spelling of 12839387 in words is "twelve million, eight hundred thirty-nine thousand, three hundred eighty-seven".