Should I be calling or folding the river?

PokerStars No-Limit Hold'em, $0.02 BB (6 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

Hero (MP) ($2.30)
CO ($4.13)
Button ($2.70)
SB ($1.25)
BB ($1.71)
UTG ($2.16)

Preflop: Hero is MP with 8, 9
1 fold, Hero raises to $0.08, 1 fold, Button calls $0.08, 2 folds

Flop: ($0.19) 6, 7, 2 (2 players)
Hero bets $0.20, Button calls $0.20

Turn: ($0.59) 9 (2 players)
Hero bets $0.50, Button calls $0.50

River: ($1.59) A (2 players)
Hero checks, Button bets $1.92 (All-In), Hero ??