12327209 has 4 divisors (see below), whose sum is σ = 12339600. Its totient is φ = 12314820.

The previous prime is 12327173. The next prime is 12327221. The reversal of 12327209 is 90272321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12327209 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12327229) 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 3 ways as a sum of consecutive naturals, for example, 4559 + ... + 6740.

It is an arithmetic number, because the mean of its divisors is an integer number (3084900).

Almost surely, 2^12327209 is an apocalyptic number.

It is an amenable number.

12327209 is a deficient number, since it is larger than the sum of its proper divisors (12391).

12327209 is a wasteful number, since it uses less digits than its factorization.

12327209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12390.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 12327209 is about 3511.0125320198. The cubic root of 12327209 is about 231.0051097362.

The spelling of 12327209 in words is "twelve million, three hundred twenty-seven thousand, two hundred nine".