12243447 has 8 divisors (see below), whose sum is σ = 18138480. Its totient is φ = 8162280.

The previous prime is 12243443. The next prime is 12243457. The reversal of 12243447 is 74434221.

It is not a de Polignac number, because 12243447 - 2² = 12243443 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: 453461 = 12243447 / (1 + 2 + 2 + 4 + 3 + 4 + 4 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 12243447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243443) 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, 226704 + ... + 226757.

It is an arithmetic number, because the mean of its divisors is an integer number (2267310).

Almost surely, 2^12243447 is an apocalyptic number.

12243447 is a deficient number, since it is larger than the sum of its proper divisors (5895033).

12243447 is an equidigital number, since it uses as much as digits as its factorization.

12243447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453470 (or 453464 counting only the distinct ones).

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

The square root of 12243447 is about 3499.0637319146. The cubic root of 12243447 is about 230.4807022521.

Adding to 12243447 its reverse (74434221), we get a palindrome (86677668).

The spelling of 12243447 in words is "twelve million, two hundred forty-three thousand, four hundred forty-seven".