@article{hrj:5115,
    title      = {A note on some congruences involving arithmetic functions},
    author     = {József Sándor},
    url        = {https://hrj.episciences.org/5115},
    doi        = {10.46298/hrj.2019.5115},
    journal    = {Hardy-Ramanujan Journal},
    issn       = {2804-7370},
    volume     = {},
    year       = {2019},
    month      = {Jan},
    keywords   = {Euler's totient, Dedekind's arithmetical function, number of divisors, primality, congruences 2010 Mathematics Subject Classification 11A25, 11A07, 11D45, 11N05, [MATH]Mathematics [math], [MATH.MATH-NT]Mathematics [math]/Number Theory [math.NT]},
    language   = {English},
}