12838239 has 6 divisors (see below), whose sum is σ = 18544136. Its totient is φ = 8558820.

The previous prime is 12838237. The next prime is 12838249. The reversal of 12838239 is 93283821.

It is a happy number.

It is not a de Polignac number, because 12838239 - 2¹ = 12838237 is a prime.

It is a super-2 number, since 2×12838239² = 329640761242242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12838237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 713227 + ... + 713244.

Almost surely, 2^12838239 is an apocalyptic number.

12838239 is a deficient number, since it is larger than the sum of its proper divisors (5705897).

12838239 is a wasteful number, since it uses less digits than its factorization.

12838239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426477 (or 1426474 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 12838239 is about 3583.0488414198. The cubic root of 12838239 is about 234.1541281320.

The spelling of 12838239 in words is "twelve million, eight hundred thirty-eight thousand, two hundred thirty-nine".