12447269 has 2 divisors, whose sum is σ = 12447270. Its totient is φ = 12447268.

The previous prime is 12447221. The next prime is 12447277. The reversal of 12447269 is 96274421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7496644 + 4950625 = 2738^2 + 2225^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12447269 is a prime.

It is a super-2 number, since 2×12447269² = 309869011116722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12447469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6223634 + 6223635.

It is an arithmetic number, because the mean of its divisors is an integer number (6223635).

Almost surely, 2^12447269 is an apocalyptic number.

It is an amenable number.

12447269 is a deficient number, since it is larger than the sum of its proper divisors (1).

12447269 is an equidigital number, since it uses as much as digits as its factorization.

12447269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 12447269 is about 3528.0687351581. The cubic root of 12447269 is about 231.7526408870.

The spelling of 12447269 in words is "twelve million, four hundred forty-seven thousand, two hundred sixty-nine".