2012909 has 2 divisors, whose sum is σ = 2012910. Its totient is φ = 2012908.

The previous prime is 2012893. The next prime is 2012951. The reversal of 2012909 is 9092102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1747684 + 265225 = 1322^2 + 515^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012909 - 2⁴ = 2012893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006454 + 1006455.

It is an arithmetic number, because the mean of its divisors is an integer number (1006455).

2^2012909 is an apocalyptic number.

It is an amenable number.

2012909 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012909 is an equidigital number, since it uses as much as digits as its factorization.

2012909 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 2012909 is about 1418.7702421463. The cubic root of 2012909 is about 126.2625958743.

The spelling of 2012909 in words is "two million, twelve thousand, nine hundred nine".