485209 has 2 divisors, whose sum is σ = 485210. Its totient is φ = 485208.

The previous prime is 485207. The next prime is 485263. The reversal of 485209 is 902584.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 455625 + 29584 = 675^2 + 172^2 .

It is a cyclic number.

It is not a de Polignac number, because 485209 - 2¹ = 485207 is a prime.

Together with 485207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (485201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 242604 + 242605.

It is an arithmetic number, because the mean of its divisors is an integer number (242605).

2⁴⁸⁵²⁰⁹ is an apocalyptic number.

It is an amenable number.

485209 is a deficient number, since it is larger than the sum of its proper divisors (1).

485209 is an equidigital number, since it uses as much as digits as its factorization.

485209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 485209 is about 696.5694509523. The cubic root of 485209 is about 78.5795642107.

The spelling of 485209 in words is "four hundred eighty-five thousand, two hundred nine".