How to format number textbox in angular js?

<div class="input-group-icon">Max <span class="error">*</span>
                                            <div class="input-group">
                                                <input style="border-right:none;" name="investment_amount_max" ng-model="attributes.investment_amount_max"   max="{{constants.globalValue.maxNumber}}" min="{{attributes.investment_amount_min}}" type="number" ng-patte="/^[0-9]+(.[0-9]{1,2})?$/" step="0.01" required  class="form-control input-sm m-bot15" /> 
                                                <span style="border-left:none; background:none; border-color:#e2e2e4;" class="input-group-addon" id="basic-addon2">{{programname.country.currency_symbol?programname.country.currency_symbol:'$sss'}}</span> </div>
                                            <span id='number-default'>{{attributes.investment_amount_max | number}}</span>
                                                <label for="investment_amount_max" ng-show="submittab1 && attributesForm.investment_amount_max.$error.required" class="error">{{formValidation.required}}</label> 
                                            <label for="investment_amount_max" ng-show="submittab1 && attributesForm.investment_amount_max.$error.min" class="error"> {{formValidation.minMax}} </label>
                                            <label for="investment_amount_max" ng-show="submittab1 && attributesForm.investment_amount_max.$error.max" class="error"> {{formValidation.numberMax}} </label>
                                            <label for="investment_amount_min" ng-show="submittab1 && attributesForm.investment_amount_max.$error.number" class="error">{{formValidation.errorNumber}}</label>

                                        </div>

Refer my above coding,How to format number in inside textbox number using angular js ?