12447243 has 8 divisors (see below), whose sum is σ = 18440400. Its totient is φ = 8298144.

The previous prime is 12447221. The next prime is 12447269. The reversal of 12447243 is 34274421.

It is not a de Polignac number, because 12447243 - 2¹⁰ = 12446219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 461009 = 12447243 / (1 + 2 + 4 + 4 + 7 + 2 + 4 + 3).

It is not an unprimeable number, because it can be changed into a prime (12447283) 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, 230478 + ... + 230531.

It is an arithmetic number, because the mean of its divisors is an integer number (2305050).

Almost surely, 2^12447243 is an apocalyptic number.

12447243 is a deficient number, since it is larger than the sum of its proper divisors (5993157).

12447243 is an equidigital number, since it uses as much as digits as its factorization.

12447243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461018 (or 461012 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 12447243 is about 3528.0650504207. The cubic root of 12447243 is about 231.7524795244.

The spelling of 12447243 in words is "twelve million, four hundred forty-seven thousand, two hundred forty-three".