2880809 has 2 divisors, whose sum is σ = 2880810. Its totient is φ = 2880808.

The previous prime is 2880797. The next prime is 2880811. The reversal of 2880809 is 9080882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2166784 + 714025 = 1472^2 + 845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2880809 is a prime.

It is a Sophie Germain prime.

Together with 2880811, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2880859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1440404 + 1440405.

It is an arithmetic number, because the mean of its divisors is an integer number (1440405).

2^2880809 is an apocalyptic number.

It is an amenable number.

2880809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2880809 is an equidigital number, since it uses as much as digits as its factorization.

2880809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 2880809 is about 1697.2946120223. The cubic root of 2880809 is about 142.2890528152.

The spelling of 2880809 in words is "two million, eight hundred eighty thousand, eight hundred nine".