12275909 has 2 divisors, whose sum is σ = 12275910. Its totient is φ = 12275908.

The previous prime is 12275891. The next prime is 12275911. The reversal of 12275909 is 90957221.

12275909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12271009 + 4900 = 3503^2 + 70^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12275909 is a prime.

Together with 12275911, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12275959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6137954 + 6137955.

It is an arithmetic number, because the mean of its divisors is an integer number (6137955).

Almost surely, 2^12275909 is an apocalyptic number.

It is an amenable number.

12275909 is a deficient number, since it is larger than the sum of its proper divisors (1).

12275909 is an equidigital number, since it uses as much as digits as its factorization.

12275909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 12275909 is about 3503.6993307075. The cubic root of 12275909 is about 230.6842196075.

The spelling of 12275909 in words is "twelve million, two hundred seventy-five thousand, nine hundred nine".