12085009 has 4 divisors (see below), whose sum is σ = 12474880. Its totient is φ = 11695140.

The previous prime is 12085001. The next prime is 12085013. The reversal of 12085009 is 90058021.

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 not a de Polignac number, because 12085009 - 2³ = 12085001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12085001) 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, 194889 + ... + 194950.

It is an arithmetic number, because the mean of its divisors is an integer number (3118720).

Almost surely, 2^12085009 is an apocalyptic number.

It is an amenable number.

12085009 is a deficient number, since it is larger than the sum of its proper divisors (389871).

12085009 is an equidigital number, since it uses as much as digits as its factorization.

12085009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389870.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 12085009 is about 3476.3499536151. The cubic root of 12085009 is about 229.4821936590.

The spelling of 12085009 in words is "twelve million, eighty-five thousand, nine".