4536809 has 2 divisors, whose sum is σ = 4536810. Its totient is φ = 4536808.

The previous prime is 4536803. The next prime is 4536817. The reversal of 4536809 is 9086354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3888784 + 648025 = 1972^2 + 805^2 .

It is a cyclic number.

It is not a de Polignac number, because 4536809 - 2⁴ = 4536793 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4536803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2268404 + 2268405.

It is an arithmetic number, because the mean of its divisors is an integer number (2268405).

Almost surely, 2^4536809 is an apocalyptic number.

It is an amenable number.

4536809 is a deficient number, since it is larger than the sum of its proper divisors (1).

4536809 is an equidigital number, since it uses as much as digits as its factorization.

4536809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 4536809 is about 2129.9786383905. The cubic root of 4536809 is about 165.5452911339.

The spelling of 4536809 in words is "four million, five hundred thirty-six thousand, eight hundred nine".