434209 has 2 divisors, whose sum is σ = 434210. Its totient is φ = 434208.

The previous prime is 434201. The next prime is 434221. The reversal of 434209 is 902434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 429025 + 5184 = 655^2 + 72^2 .

It is a cyclic number.

It is not a de Polignac number, because 434209 - 2³ = 434201 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 434209.

It is not a weakly prime, because it can be changed into another prime (434201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217104 + 217105.

It is an arithmetic number, because the mean of its divisors is an integer number (217105).

2⁴³⁴²⁰⁹ is an apocalyptic number.

It is an amenable number.

434209 is a deficient number, since it is larger than the sum of its proper divisors (1).

434209 is an equidigital number, since it uses as much as digits as its factorization.

434209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 434209 is about 658.9453695110. The cubic root of 434209 is about 75.7238942526.

The spelling of 434209 in words is "four hundred thirty-four thousand, two hundred nine".