12838639 has 8 divisors (see below), whose sum is σ = 14332032. Its totient is φ = 11399640.

The previous prime is 12838627. The next prime is 12838643. The reversal of 12838639 is 93683821.

12838639 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12838639 - 2⁹ = 12838127 is a prime.

It is a super-3 number, since 3×12838639³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12838649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13099 + ... + 14044.

It is an arithmetic number, because the mean of its divisors is an integer number (1791504).

Almost surely, 2^12838639 is an apocalyptic number.

12838639 is a deficient number, since it is larger than the sum of its proper divisors (1493393).

12838639 is a wasteful number, since it uses less digits than its factorization.

12838639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27197.

The product of its digits is 62208, while the sum is 40.

The square root of 12838639 is about 3583.1046593701. The cubic root of 12838639 is about 234.1565599473.

The spelling of 12838639 in words is "twelve million, eight hundred thirty-eight thousand, six hundred thirty-nine".