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+---
+title: Number.NaN
+slug: Web/JavaScript/Reference/Global_Objects/Number/NaN
+translation_of: Web/JavaScript/Reference/Global_Objects/Number/NaN
+---
+<div>{{JSRef}}</div>
+
+<p>A propriedade <strong><code>Number.NaN</code></strong> representa Not-A-Number (Não-Número). Equivalente a {{jsxref("NaN")}}.</p>
+
+<p>Você não precisa criar um objeto {{jsxref("Number")}} para acessar esta propriedade estática (use <code>Number.NaN</code>).</p>
+
+<div>{{js_property_attributes(0, 0, 0)}}</div>
+
+<h2 id="Especificações">Especificações</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">Especificação</th>
+   <th scope="col">Status</th>
+   <th scope="col">Detalhes</th>
+  </tr>
+  <tr>
+   <td>{{SpecName('ES1')}}</td>
+   <td>{{Spec2('ES1')}}</td>
+   <td>Definição Inicial. Implementado no JavaScript 1.1.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ES5.1', '#sec-15.7.3.4', 'Number.NaN')}}</td>
+   <td>{{Spec2('ES5.1')}}</td>
+   <td> </td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ES6', '#sec-number.nan', 'Number.NaN')}}</td>
+   <td>{{Spec2('ES6')}}</td>
+   <td> </td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ESDraft', '#sec-number.nan', 'Number.NaN')}}</td>
+   <td>{{Spec2('ESDraft')}}</td>
+   <td> </td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Compatibilidade_de_Navegadores">Compatibilidade de Navegadores</h2>
+
+<div>{{CompatibilityTable}}</div>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Chrome</th>
+   <th>Firefox (Gecko)</th>
+   <th>Internet Explorer</th>
+   <th>Opera</th>
+   <th>Safari</th>
+  </tr>
+  <tr>
+   <td>Suporte Básico</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Android</th>
+   <th>Chrome for Android</th>
+   <th>Firefox Mobile (Gecko)</th>
+   <th>IE Mobile</th>
+   <th>Opera Mobile</th>
+   <th>Safari Mobile</th>
+  </tr>
+  <tr>
+   <td>Suporte Básico</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="sect1"> </h2>
+
+<h2 id="Veja_também">Veja também</h2>
+
+<ul>
+ <li>O objeto global {{jsxref("NaN")}}.</li>
+ <li>O objeto {{jsxref("Number")}} ao qual ele pertence.</li>
+</ul>