12209009 has 8 divisors (see below), whose sum is σ = 13344768. Its totient is φ = 11119680.

The previous prime is 12209003. The next prime is 12209011. The reversal of 12209009 is 90090221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12209009 - 2¹⁶ = 12143473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12209003) 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 in 7 ways as a sum of consecutive naturals, for example, 11057 + ... + 12110.

It is an arithmetic number, because the mean of its divisors is an integer number (1668096).

Almost surely, 2^12209009 is an apocalyptic number.

It is an amenable number.

12209009 is a deficient number, since it is larger than the sum of its proper divisors (1135759).

12209009 is a wasteful number, since it uses less digits than its factorization.

12209009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23215.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 12209009 is about 3494.1392359206. The cubic root of 12209009 is about 230.2644029261.

The spelling of 12209009 in words is "twelve million, two hundred nine thousand, nine".