The antivirus report indicates that this application is completely safe. Microsoft Corporation is the developer of the app which is included in the Productivity category. Cortana has the average rating 4.2 on Google Play.
The tool was downloaded and set up by over 1M users and the latest stable release was on May 1, 2017. A lot of users set up this application on their Samsung and Sony devices. Get the latest .apk setup package of Cortana 18.104.22.1686-enus-release free of charge and check out users' reviews on Droid Informer. You will need 16 MB of free disk space to set up the app which is compatible with Android 4.4 and above.