809269 has 2 divisors, whose sum is σ = 809270. Its totient is φ = 809268.

The previous prime is 809261. The next prime is 809273. The reversal of 809269 is 962908.

809269 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., 786769 + 22500 = 887^2 + 150^2 .

It is a cyclic number.

It is not a de Polignac number, because 809269 - 2³ = 809261 is a prime.

It is a super-2 number, since 2×809269² = 1309832628722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (809261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404634 + 404635.

It is an arithmetic number, because the mean of its divisors is an integer number (404635).

2⁸⁰⁹²⁶⁹ is an apocalyptic number.

It is an amenable number.

809269 is a deficient number, since it is larger than the sum of its proper divisors (1).

809269 is an equidigital number, since it uses as much as digits as its factorization.

809269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 809269 is about 899.5937972218. The cubic root of 809269 is about 93.1889249244.

The spelling of 809269 in words is "eight hundred nine thousand, two hundred sixty-nine".