12628839 has 4 divisors (see below), whose sum is σ = 16838456. Its totient is φ = 8419224.

The previous prime is 12628801. The next prime is 12628843. The reversal of 12628839 is 93882621.

It is a happy number.

12628839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12628839 - 2⁹ = 12628327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12628797 and 12628806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12628859) 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, 2104804 + ... + 2104809.

It is an arithmetic number, because the mean of its divisors is an integer number (4209614).

Almost surely, 2^12628839 is an apocalyptic number.

12628839 is a deficient number, since it is larger than the sum of its proper divisors (4209617).

12628839 is an equidigital number, since it uses as much as digits as its factorization.

12628839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4209616.

The product of its digits is 41472, while the sum is 39.

The square root of 12628839 is about 3553.7077820215. The cubic root of 12628839 is about 232.8740746610.

It can be divided in two parts, 1262 and 8839, that added together give a palindrome (10101).

The spelling of 12628839 in words is "twelve million, six hundred twenty-eight thousand, eight hundred thirty-nine".