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# Number.NaN

The **`Number.NaN`** property represents Not-A-Number, which is equivalent to [description for the global property](../../globals/NaN.mdx). For more information about the behaviors of `NaN`, see the [`NaN`](../../globals/NaN.mdx).

## Value

The number value [`NaN`](../../globals/NaN.mdx).

## Description

Because `NaN` is a static property of `Number`, you always use it as `Number.NaN`, rather than as a property of a number value.
