12290009 has 2 divisors, whose sum is σ = 12290010. Its totient is φ = 12290008.

The previous prime is 12289999. The next prime is 12290071. The reversal of 12290009 is 90009221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12054784 + 235225 = 3472^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 12290009 - 2¹⁶ = 12224473 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12290209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6145004 + 6145005.

It is an arithmetic number, because the mean of its divisors is an integer number (6145005).

Almost surely, 2^12290009 is an apocalyptic number.

It is an amenable number.

12290009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12290009 is an equidigital number, since it uses as much as digits as its factorization.

12290009 is an odious number, because the sum of its binary digits is odd.

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

The square root of 12290009 is about 3505.7109122117. The cubic root of 12290009 is about 230.7725064293.

The spelling of 12290009 in words is "twelve million, two hundred ninety thousand, nine".