809339 has 2 divisors, whose sum is σ = 809340. Its totient is φ = 809338.

The previous prime is 809323. The next prime is 809357. The reversal of 809339 is 933908.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 809339 - 2⁴ = 809323 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (809309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404669 + 404670.

It is an arithmetic number, because the mean of its divisors is an integer number (404670).

2⁸⁰⁹³³⁹ is an apocalyptic number.

809339 is a deficient number, since it is larger than the sum of its proper divisors (1).

809339 is an equidigital number, since it uses as much as digits as its factorization.

809339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 809339 is about 899.6327028293. The cubic root of 809339 is about 93.1916117264.

The spelling of 809339 in words is "eight hundred nine thousand, three hundred thirty-nine".