A futurist who changed his given name to something a little more forward looking, FM-2030 to be specific, died Saturday night at a friend's Manhattan apartment. An author, teacher and consultant to corporations, he was 69 and lived in Miami.

The FM might have stood for Future Man, Future Modular or Future Marvel, but he never said. He also did not like to answer questions about his nationality, because he considered himself a global person. He felt the same way about his age, because his latest artificial hip was only two years old, making the question, in his view, meaningless.

But he would have turned 100 in 2030. And, if his plans are realized, he might still.

FM-2030, who was known for his sunny optimism, had directed that his body be frozen by an Arizona foundation specializing in such things in the hope that doctors in the future will find a cure for pancreatic cancer, which his longtime friend Flora Schnall said was the cause of death.

Part of his futuristic vision is the idea that people will eventually become wholly made of synthetic parts, as their minds are transported vast distances through space. He predicted that humans would become ''post-biological organisms.''