Fourteen percent of Japanese adults living alone have no money in the bank to guard themselves for rainy days, according to a recent survey of several thousand people by the nation's Central Council for Financial Services Information.

The annual research by the council, which is run by the Bank of Japan, also found that 34 percent of single member households have no long-term investments or savings. If the responses hold true for all single member households across Japan, almost 2.4 million have no money in the bank and 5.7 million have no investments or savings.

The survey's findings don't indicate whether people have cash stashed at home.