809369 has 6 divisors (see below), whose sum is σ = 889770. Its totient is φ = 735680.

The previous prime is 809359. The next prime is 809377. The reversal of 809369 is 963908.

809369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 774400 + 34969 = 880^2 + 187^2 .

It is not a de Polignac number, because 809369 - 2¹⁶ = 743833 is a prime.

It is a super-2 number, since 2×809369² = 1310156356322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (809309) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3224 + ... + 3465.

It is an arithmetic number, because the mean of its divisors is an integer number (148295).

2⁸⁰⁹³⁶⁹ is an apocalyptic number.

It is an amenable number.

809369 is a deficient number, since it is larger than the sum of its proper divisors (80401).

809369 is a wasteful number, since it uses less digits than its factorization.

809369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6711 (or 6700 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 809369 is about 899.6493761461. The cubic root of 809369 is about 93.1927631655.

It can be divided in two parts, 80 and 9369, that added together give a palindrome (9449).

The spelling of 809369 in words is "eight hundred nine thousand, three hundred sixty-nine".