New
Yes, the number "49000" is a natural number as it exists in the collection of the natural numbers in the number line.
\[\begin{align}
& N=\left\{ \ 1,\ 2,\ 3,\ \ldots +\infty \right\},\text{ where} \\
& \infty \text{ denotes infinity and + indicates positive value or direction} \\
\end{align}\]
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