12249917 has 2 divisors, whose sum is σ = 12249918. Its totient is φ = 12249916.

The previous prime is 12249907. The next prime is 12249947. The reversal of 12249917 is 71994221.

12249917 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8886361 + 3363556 = 2981^2 + 1834^2 .

It is a cyclic number.

It is not a de Polignac number, because 12249917 - 2²⁰ = 11201341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12249907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6124958 + 6124959.

It is an arithmetic number, because the mean of its divisors is an integer number (6124959).

Almost surely, 2^12249917 is an apocalyptic number.

It is an amenable number.

12249917 is a deficient number, since it is larger than the sum of its proper divisors (1).

12249917 is an equidigital number, since it uses as much as digits as its factorization.

12249917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 35.

The square root of 12249917 is about 3499.9881428371. The cubic root of 12249917 is about 230.5212939674.

The spelling of 12249917 in words is "twelve million, two hundred forty-nine thousand, nine hundred seventeen".