2925809 has 2 divisors, whose sum is σ = 2925810. Its totient is φ = 2925808.

The previous prime is 2925799. The next prime is 2925817. The reversal of 2925809 is 9085292.

2925809 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., 2900209 + 25600 = 1703^2 + 160^2 .

It is a cyclic number.

It is not a de Polignac number, because 2925809 - 2²⁰ = 1877233 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 (2925859) 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, 1462904 + 1462905.

It is an arithmetic number, because the mean of its divisors is an integer number (1462905).

2^2925809 is an apocalyptic number.

It is an amenable number.

2925809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2925809 is an equidigital number, since it uses as much as digits as its factorization.

2925809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 2925809 is about 1710.4996346097. The cubic root of 2925809 is about 143.0261089791.

The spelling of 2925809 in words is "two million, nine hundred twenty-five thousand, eight hundred nine".