12289811 has 2 divisors, whose sum is σ = 12289812. Its totient is φ = 12289810.

The previous prime is 12289807. The next prime is 12289813. The reversal of 12289811 is 11898221.

It is a strong prime.

It is an emirp because it is prime and its reverse (11898221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12289811 - 2² = 12289807 is a prime.

Together with 12289813, 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 (12289813) 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, 6144905 + 6144906.

It is an arithmetic number, because the mean of its divisors is an integer number (6144906).

Almost surely, 2^12289811 is an apocalyptic number.

12289811 is a deficient number, since it is larger than the sum of its proper divisors (1).

12289811 is an equidigital number, since it uses as much as digits as its factorization.

12289811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 32.

The square root of 12289811 is about 3505.6826724620. The cubic root of 12289811 is about 230.7712671245.

The spelling of 12289811 in words is "twelve million, two hundred eighty-nine thousand, eight hundred eleven".