12243917 has 8 divisors (see below), whose sum is σ = 14054976. Its totient is φ = 10448352.

The previous prime is 12243899. The next prime is 12243937. The reversal of 12243917 is 71934221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12243917 - 2⁸ = 12243661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12243917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243937) 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, 2123 + ... + 5384.

It is an arithmetic number, because the mean of its divisors is an integer number (1756872).

Almost surely, 2^12243917 is an apocalyptic number.

It is an amenable number.

12243917 is a deficient number, since it is larger than the sum of its proper divisors (1811059).

12243917 is an equidigital number, since it uses as much as digits as its factorization.

12243917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7747.

The product of its digits is 3024, while the sum is 29.

The square root of 12243917 is about 3499.1308920931. The cubic root of 12243917 is about 230.4836514364.

The spelling of 12243917 in words is "twelve million, two hundred forty-three thousand, nine hundred seventeen".