12839638 has 8 divisors (see below), whose sum is σ = 22010832. Its totient is φ = 5502696.

The previous prime is 12839627. The next prime is 12839657. The reversal of 12839638 is 83693821.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12839638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458545 + ... + 458572.

It is an arithmetic number, because the mean of its divisors is an integer number (2751354).

Almost surely, 2^12839638 is an apocalyptic number.

12839638 is a deficient number, since it is larger than the sum of its proper divisors (9171194).

12839638 is an equidigital number, since it uses as much as digits as its factorization.

12839638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917126.

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

The square root of 12839638 is about 3583.2440609035. The cubic root of 12839638 is about 234.1626331855.

The spelling of 12839638 in words is "twelve million, eight hundred thirty-nine thousand, six hundred thirty-eight".