485809 has 9 divisors (see below), whose sum is σ = 528961. Its totient is φ = 446080.

The previous prime is 485777. The next prime is 485819. The reversal of 485809 is 908584.

The square root of 485809 is 697.

It is a perfect power (a square), and thus also a powerful number.

485809 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 4 ways, for example, as 34225 + 451584 = 185^2 + 672^2 .

It is not a de Polignac number, because 485809 - 2⁵ = 485777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (485819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11829 + ... + 11869.

2⁴⁸⁵⁸⁰⁹ is an apocalyptic number.

485809 is the 697-th square number.

485809 is the 349-th centered octagonal number.

It is an amenable number.

485809 is a deficient number, since it is larger than the sum of its proper divisors (43152).

485809 is an equidigital number, since it uses as much as digits as its factorization.

485809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 58 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The cubic root of 485809 is about 78.6119408552.

The spelling of 485809 in words is "four hundred eighty-five thousand, eight hundred nine".