Numbers of more than four digits normally have a comma separating the thousand-units. Write 10,000 instead of 10 000. A general rule is that numbers should not start a sentence in numerical form. Exceptions to this include scientific or technical papers, which may have so many numbers that awkward structures would otherwise appear. The first letters of all words in titles except articles and prepositions are usually capitalized in English.
American usage capitalizes all the primary words in titles almost without exception.
However, British usage resembles American with the titles of books, research papers, and the like. Words Word division is problematic in English. It is best not to divide words at all, especially in formal writing. But if you must divide words, consult a dictionary like the Oxford Learner's which gives standard word divisions. Abbreviations from other languages seldom 'transfer' to English.