823269 has 4 divisors (see below), whose sum is σ = 1097696. Its totient is φ = 548844.

The previous prime is 823261. The next prime is 823271. The reversal of 823269 is 962328.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 823269 - 2³ = 823261 is a prime.

It is a super-2 number, since 2×823269² = 1355543692722, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

823269 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137209 + ... + 137214.

It is an arithmetic number, because the mean of its divisors is an integer number (274424).

2⁸²³²⁶⁹ is an apocalyptic number.

It is an amenable number.

823269 is a deficient number, since it is larger than the sum of its proper divisors (274427).

823269 is a wasteful number, since it uses less digits than its factorization.

823269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274426.

The product of its digits is 5184, while the sum is 30.

The square root of 823269 is about 907.3417217344. The cubic root of 823269 is about 93.7232314686.

The spelling of 823269 in words is "eight hundred twenty-three thousand, two hundred sixty-nine".