12249761 has 2 divisors, whose sum is σ = 12249762. Its totient is φ = 12249760.

The previous prime is 12249749. The next prime is 12249763. The reversal of 12249761 is 16794221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9120400 + 3129361 = 3020^2 + 1769^2 .

It is an emirp because it is prime and its reverse (16794221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12249761 - 2⁶ = 12249697 is a prime.

Together with 12249763, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12249763) 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, 6124880 + 6124881.

It is an arithmetic number, because the mean of its divisors is an integer number (6124881).

Almost surely, 2^12249761 is an apocalyptic number.

It is an amenable number.

12249761 is a deficient number, since it is larger than the sum of its proper divisors (1).

12249761 is an equidigital number, since it uses as much as digits as its factorization.

12249761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 32.

The square root of 12249761 is about 3499.9658569763. The cubic root of 12249761 is about 230.5203154173.

The spelling of 12249761 in words is "twelve million, two hundred forty-nine thousand, seven hundred sixty-one".