2912009 has 2 divisors, whose sum is σ = 2912010. Its totient is φ = 2912008.

The previous prime is 2911973. The next prime is 2912023. The reversal of 2912009 is 9002192.

2912009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1951609 + 960400 = 1397^2 + 980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2912009 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 (2912059) 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 as a sum of consecutive naturals, namely, 1456004 + 1456005.

It is an arithmetic number, because the mean of its divisors is an integer number (1456005).

2^2912009 is an apocalyptic number.

It is an amenable number.

2912009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2912009 is an equidigital number, since it uses as much as digits as its factorization.

2912009 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 2912009 is about 1706.4609576548. The cubic root of 2912009 is about 142.8008867544.

The spelling of 2912009 in words is "two million, nine hundred twelve thousand, nine".