Mean of the minimum of two Paretos

Let $X$ and $Y$ be i.i.d. random variables with probability density function $$f(x)=\begin{cases}1/x^2& \text{if }x\ge 1,\ 0& \text{otherwise.}\end{cases}$$ Suppose $Z=\min\{X,Y\}$, then $\mathbb{E}(Z)$ is equal to __________ (answer in integer)