NPM erro Ubuntu 16.04

:~/Documentos/CODE/Angular2 Estudo$ npm init -y
npm ERR! Linux 4.4.0-47-generic
npm ERR! argv "/usr/bin/nodejs" "/usr/bin/npm" "init" "-y"
npm ERR! node v7.2.0
npm ERR! npm v3.10.9

npm ERR! Invalid name: "Angular2 Estudo"
npm ERR!
npm ERR! If you need help, you may report this error at:
npm ERR! <https://github.com/npm/npm/issues>

npm ERR! Please include the following file with any support request:
npm ERR! /home/administrador/Documentos/CODE/Angular2 Estudo/npm-debug.log
:~/Documentos/CODE/Angular2 Estudo$ npm -v
3.10.9