12243289 has 2 divisors, whose sum is σ = 12243290. Its totient is φ = 12243288.

The previous prime is 12243251. The next prime is 12243313. The reversal of 12243289 is 98234221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10017225 + 2226064 = 3165^2 + 1492^2 .

It is a cyclic number.

It is not a de Polignac number, because 12243289 - 2²¹ = 10146137 is a prime.

It is equal to p₈₀₂₉₅₇ and since 12243289 and 802957 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12243289.

It is not a weakly prime, because it can be changed into another prime (12243229) 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 as a sum of consecutive naturals, namely, 6121644 + 6121645.

It is an arithmetic number, because the mean of its divisors is an integer number (6121645).

Almost surely, 2^12243289 is an apocalyptic number.

It is an amenable number.

12243289 is a deficient number, since it is larger than the sum of its proper divisors (1).

12243289 is an equidigital number, since it uses as much as digits as its factorization.

12243289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 12243289 is about 3499.0411543736. The cubic root of 12243289 is about 230.4797108073.

The spelling of 12243289 in words is "twelve million, two hundred forty-three thousand, two hundred eighty-nine".