The partial government shutdown in the U.S. has forced federal workers off the job and caused the suspension of all but essential government services. Here's a look at the standoff and its effects, by the numbers.

800,000 federal workers: Most nonessential federal programs and services are being suspended, meaning about 800,000 workers — including 400,000 Defence Department civilians — have been temporarily forced off the job. Employees will receive an official email Tuesday explaining whether or not they are essential or slated to be furloughed.

17 government services: It's difficult to enumerate the many ways the shutdown will affect Americans, but the official U.S. government website specifically mentions 17 services that will be or could be affected. For example, there will be no new home loan guarantees, no new patients at the National Institutes of Health, and no new passport applications during the shutdown. Many attractions are closed including the National Zoo and presidential libraries. Services the government says will be unaffected include air traffic control, military, prisons, border security, mail delivery, anything related to national security and public safety, social security cheques and emergency medical care.

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A park ranger reads a sign announcing the closing of the Statue of Liberty as part of the partial government shutdown. All non-essential services are closed. (Mark Lennihan/Associated Press)

401 National Park Service sites shut down:  These areas include the country's 59 national parks, as well as monuments, battlefields, smaller parks, historic sites, lakeshores, seashores, recreation areas and scenic rivers and trails.

1 panda cam: The beloved panda cam at Washington's National Zoo has gone dark because of the government shutdown. Mother Mei Xiang and her weeks-old cub had been a popular draw, but the camera was deemed non-essential and shut off at 8 a.m. Tuesday.

17 years: It's been that long since the last U.S. government shutdown. A pair of shutdowns in late 1995 and early 1996 happened during a standoff led by Republican Speaker Newt Gingrich and then-president Bill Clinton. It severely damaged Republican election prospects and revived Clinton's political standing. 

$1.4 billion: The cost to taxpayers of those mid-'90s shutdowns, according to the U.S. Office of Management and Budget.

With files from The Associated Press