12243397 has 4 divisors (see below), whose sum is σ = 12252960. Its totient is φ = 12233836.

The previous prime is 12243389. The next prime is 12243401. The reversal of 12243397 is 79334221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12243397 - 2³ = 12243389 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2497 + ... + 5542.

It is an arithmetic number, because the mean of its divisors is an integer number (3063240).

Almost surely, 2^12243397 is an apocalyptic number.

It is an amenable number.

12243397 is a deficient number, since it is larger than the sum of its proper divisors (9563).

12243397 is an equidigital number, since it uses as much as digits as its factorization.

12243397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9562.

The product of its digits is 9072, while the sum is 31.

The square root of 12243397 is about 3499.0565871389. The cubic root of 12243397 is about 230.4803885047.

The spelling of 12243397 in words is "twelve million, two hundred forty-three thousand, three hundred ninety-seven".