12810839 has 8 divisors (see below), whose sum is σ = 13420512. Its totient is φ = 12205600.

The previous prime is 12810829. The next prime is 12810857. The reversal of 12810839 is 93801821.

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 12810839 - 2⁸ = 12810583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12810829) 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, 5789 + ... + 7689.

It is an arithmetic number, because the mean of its divisors is an integer number (1677564).

Almost surely, 2^12810839 is an apocalyptic number.

12810839 is a deficient number, since it is larger than the sum of its proper divisors (609673).

12810839 is a wasteful number, since it uses less digits than its factorization.

12810839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2217.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 12810839 is about 3579.2232397547. The cubic root of 12810839 is about 233.9874284039.

The spelling of 12810839 in words is "twelve million, eight hundred ten thousand, eight hundred thirty-nine".