The energy of a photon is related to its frequency as:
`E = hnu`
where, h is the Planck's constant (6.626 x 10^-34 J s).
Thus, the energy of the photon can be calculated as:
`E = h xx nu = 6.626 xx10^(-34) xx 4.448 xx 10^14`
`= 2.947 xx 10^(-19) J`
Hope this helps.