809359 has 2 divisors, whose sum is σ = 809360. Its totient is φ = 809358.

The previous prime is 809357. The next prime is 809377. The reversal of 809359 is 953908.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 809359 - 2¹ = 809357 is a prime.

Together with 809357, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (809357) 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, 404679 + 404680.

It is an arithmetic number, because the mean of its divisors is an integer number (404680).

2⁸⁰⁹³⁵⁹ is an apocalyptic number.

809359 is a deficient number, since it is larger than the sum of its proper divisors (1).

809359 is an equidigital number, since it uses as much as digits as its factorization.

809359 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 809359 is about 899.6438184082. The cubic root of 809359 is about 93.1923793557.

The spelling of 809359 in words is "eight hundred nine thousand, three hundred fifty-nine".