12869439 has 20 divisors (see below), whose sum is σ = 18939480. Its totient is φ = 7773040.

The previous prime is 12869429. The next prime is 12869453. The reversal of 12869439 is 93496821.

It is not a de Polignac number, because 12869439 - 2⁹ = 12868927 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12869439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12869429) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 43777 + ... + 44069.

It is an arithmetic number, because the mean of its divisors is an integer number (946974).

Almost surely, 2^12869439 is an apocalyptic number.

12869439 is a deficient number, since it is larger than the sum of its proper divisors (6070041).

12869439 is an frugal number, since it uses more digits than its factorization.

12869439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 307 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 12869439 is about 3587.4000334504. The cubic root of 12869439 is about 234.3436582446.

The spelling of 12869439 in words is "twelve million, eight hundred sixty-nine thousand, four hundred thirty-nine".