12267009 has 12 divisors (see below), whose sum is σ = 18054036. Its totient is φ = 8023392.

The previous prime is 12266999. The next prime is 12267023. The reversal of 12267009 is 90076221.

It can be written as a sum of positive squares in 2 ways, for example, as 8105409 + 4161600 = 2847^2 + 2040^2 .

It is not a de Polignac number, because 12267009 - 2⁹ = 12266497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12267209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12382 + ... + 13335.

It is an arithmetic number, because the mean of its divisors is an integer number (1504503).

Almost surely, 2^12267009 is an apocalyptic number.

It is an amenable number.

12267009 is a deficient number, since it is larger than the sum of its proper divisors (5787027).

12267009 is a wasteful number, since it uses less digits than its factorization.

12267009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25776 (or 25773 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 12267009 is about 3502.4290142700. The cubic root of 12267009 is about 230.6284576563.

The spelling of 12267009 in words is "twelve million, two hundred sixty-seven thousand, nine".