823268539 has 4 divisors (see below), whose sum is σ = 823358160. Its totient is φ = 823178920.

The previous prime is 823268533. The next prime is 823268543. The reversal of 823268539 is 935862328.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 823268539 - 2⁵ = 823268507 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (823268533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29224 + ... + 50005.

It is an arithmetic number, because the mean of its divisors is an integer number (205839540).

Almost surely, 2^823268539 is an apocalyptic number.

823268539 is a deficient number, since it is larger than the sum of its proper divisors (89621).

823268539 is a wasteful number, since it uses less digits than its factorization.

823268539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89620.

The product of its digits is 622080, while the sum is 46.

The square root of 823268539 is about 28692.6565343818. The cubic root of 823268539 is about 937.2321397475.

The spelling of 823268539 in words is "eight hundred twenty-three million, two hundred sixty-eight thousand, five hundred thirty-nine".