465209 has 2 divisors, whose sum is σ = 465210. Its totient is φ = 465208.

The previous prime is 465187. The next prime is 465211. The reversal of 465209 is 902564.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 462400 + 2809 = 680^2 + 53^2 .

It is a cyclic number.

It is not a de Polignac number, because 465209 - 2⁸ = 464953 is a prime.

Together with 465211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (465259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232604 + 232605.

It is an arithmetic number, because the mean of its divisors is an integer number (232605).

2⁴⁶⁵²⁰⁹ is an apocalyptic number.

It is an amenable number.

465209 is a deficient number, since it is larger than the sum of its proper divisors (1).

465209 is an equidigital number, since it uses as much as digits as its factorization.

465209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 465209 is about 682.0623138688. The cubic root of 465209 is about 77.4847142937.

The spelling of 465209 in words is "four hundred sixty-five thousand, two hundred nine".