The Number Nine seems to have some unique characteristics. It is called nau (in Hindi), nava (in Sanskrit), neun (in German), and neuf (in French) - all sounding somewhat similar.
In Hinduism, we often use the words Nava graham, Nava dhanyam, Nava dwaram etc. Nava graham means the nine planets. Nava dhanyam refers to the nine important grains that are consumed as food. Nava dwaram refers to the nine holes in a human body.
We have the Goddess Navadurga in Her 9 forms (viz.Kumarika, Tri-Murti, Kalyaani, Rohini, Kaali, Chandikaa, Saambhavi, Durgaa, and Bhadraa).
Jewellery is often made up of Navaratna - the nine stones (pearl, ruby, topaz, diamond, emerald, lapis lazuli, coral, sapphire, and Go-medha) each of which represents one of the 9 planets.
Human sentiments are described as "The Navarasa"(Shantam, Shringaram, Roudram, Beepatsam etc.,).
Navaratri refers to the nine nights that we celebrate in worship of Devi; Navaamsam is the most important sub-divisional chart that we use in conjunction with Rasi chart in matching horoscopes.
The auspicious number 108 is nothing but a multiple of nine. The number of chapters in Bhagavath gita is 18. Mahabharatha war lasted for 18 days.The number of steps at Sabarimala is 18. Number of puranas are 18.
Playing with figures; if you add and re-add the single digits of the resultant obtained by multiplying any number by 9 will always be nine too. Example say, 263x 9=2367. Then adding the digits, 2+3+6+7=18. Again, adding the digits 1+8=9.
If you write a three digit number and add the the three digits and subtract the sum from the number,the sum of the balance will be nine.The largest number that you can write with just 3 digits is 9 to the power of ninety-nine.
When a two digit number is reversed and subtracted from the greater one the sum of the digits in balance is nine.
The number of important Nakshtras (stars) is 27. The number of dasas is nine [ketu, sukra etc].
For muslims, their holy month of Ramdan is the ninth month. The 36th chapter Yasin is the heart of quran. The 9th of the month of Dul Haj is the most important day of Haj.
The list seems endless.
