12886447 has 4 divisors (see below), whose sum is σ = 14727376. Its totient is φ = 11045520.

The previous prime is 12886441. The next prime is 12886451. The reversal of 12886447 is 74468821.

12886447 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 a cyclic number.

It is not a de Polignac number, because 12886447 - 2³ = 12886439 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 (12886441) 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, 920454 + ... + 920467.

It is an arithmetic number, because the mean of its divisors is an integer number (3681844).

Almost surely, 2^12886447 is an apocalyptic number.

12886447 is a deficient number, since it is larger than the sum of its proper divisors (1840929).

12886447 is an equidigital number, since it uses as much as digits as its factorization.

12886447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840928.

The product of its digits is 86016, while the sum is 40.

The square root of 12886447 is about 3589.7697697763. The cubic root of 12886447 is about 234.4468474722.

The spelling of 12886447 in words is "twelve million, eight hundred eighty-six thousand, four hundred forty-seven".