2500 to 3500 words
4000 characters is approximately 500 words.
740
not very many...
3000 Characters is averaged between 2,000 words to 2,980 words.(allwordphone.com/count-words-characters.htm)
not very many...
Typed in Romans 12 point font, there will be between 2500 and 3500 characters per page. Given this, 6000-8000 characters will cover a little bit more than two pages.
There are thousands of Chinese characters, but there are 3500 commonly used Chinese characters. Master these characters, you can basically cope with the daily and work demands. For beginners, they can start learning the low-level characters of the new HSK. There are a lot of good apps, such as MagiChinese.
740
That will depend on the words. However, in typing for measuring speed, a word is considered to be 5 characters.
Words are considered to be 3-7 characters average. However, normally the 500 characters would include the space between words. Assuming an average for this is 5 characters per word, you could probably get 80-100 words into 500 characters, depending how "big" the words are that you use.
50 words. 5 characters equals one word, so 250 / 5 = 50