12286209 has 16 divisors (see below), whose sum is σ = 18410112. Its totient is φ = 7231488.

The previous prime is 12286181. The next prime is 12286231. The reversal of 12286209 is 90268221.

12286209 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12286209 - 2⁷ = 12286081 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12286249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5952 + ... + 7745.

It is an arithmetic number, because the mean of its divisors is an integer number (1150632).

Almost surely, 2^12286209 is an apocalyptic number.

It is an amenable number.

12286209 is a deficient number, since it is larger than the sum of its proper divisors (6123903).

12286209 is a wasteful number, since it uses less digits than its factorization.

12286209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13736.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 12286209 is about 3505.1688974998. The cubic root of 12286209 is about 230.7487194676.

The spelling of 12286209 in words is "twelve million, two hundred eighty-six thousand, two hundred nine".