Use APKPure App
Get DjVU to PDF converter old version APK for Android
Convert your DjVU file to PDF format
Convert DjVU to PDF.
Simply, pick any document and click "Convert!", its done. Once PDF is engendered, you can share the pdf via bluetooth or send it via e-mail. You can also view the converted pdf document using any of your existing PDF viewer android app (say, Adobe Reader).
Conversion happens online, hence Internet connection is required for this App to work.