12052009 has 2 divisors, whose sum is σ = 12052010. Its totient is φ = 12052008.

The previous prime is 12051983. The next prime is 12052039. The reversal of 12052009 is 90025021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9000000 + 3052009 = 3000^2 + 1747^2 .

It is a cyclic number.

It is not a de Polignac number, because 12052009 - 2¹³ = 12043817 is a prime.

It is not a weakly prime, because it can be changed into another prime (12052039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6026004 + 6026005.

It is an arithmetic number, because the mean of its divisors is an integer number (6026005).

Almost surely, 2^12052009 is an apocalyptic number.

It is an amenable number.

12052009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12052009 is an equidigital number, since it uses as much as digits as its factorization.

12052009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 12052009 is about 3471.6003514230. The cubic root of 12052009 is about 229.2731242830.

The spelling of 12052009 in words is "twelve million, fifty-two thousand, nine".