12447 has 8 divisors (see below), whose sum is σ = 18480. Its totient is φ = 8280.

The previous prime is 12437. The next prime is 12451. The reversal of 12447 is 74421.

It is a happy number.

It is not a de Polignac number, because 12447 - 2¹⁰ = 11423 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12437) 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, 204 + ... + 257.

It is an arithmetic number, because the mean of its divisors is an integer number (2310).

2¹²⁴⁴⁷ is an apocalyptic number.

12447 is a deficient number, since it is larger than the sum of its proper divisors (6033).

12447 is an equidigital number, since it uses as much as digits as its factorization.

12447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 464 counting only the distinct ones).

The product of its digits is 224, while the sum is 18.

The square root of 12447 is about 111.5661238907. The cubic root of 12447 is about 23.1750971393.

Adding to 12447 its reverse (74421), we get a palindrome (86868).

It can be divided in two parts, 124 and 47, that added together give a palindrome (171).

The spelling of 12447 in words is "twelve thousand, four hundred forty-seven", and thus it is an iban number.