After paying the corresponding estate tax, Nicanor inherited a house and lot from his father valued at Php 5,000,000 on February 14, 2018. At the time of his fathers death, the property is mortgaged in the amount of Php 1,000,000. On October 6, 2021, Nicanor died. The details of Nicanors estate are reflected below: Real properties and personal properties personally owned by Nicanor Php 5,000,000 House and lot Nicanor inherited from his father: BIR Zonal value Php 3,000,000 Value per Tax Declaration: Land Php 2,000,000 House Php 4,000,000 The following are expenses / deductions paid/payable attributable to the estate at the time of his death: Outstanding balance of the mortgage on his fathers property Php 400,000 Unpaid mortgage on Nicanors properties Php 500,000 Losses Php 500,000 Total unpaid taxes Php 100,000 Claims by hospitals on unpaid medical bills Php 500,000 Donation to the City Government for Public Use Php 500,000

How much is the total allowable (ordinary and special) deductions on the estate of Nicanor?