9950 has 12 divisors (see below), whose sum is σ = 18600. Its totient is φ = 3960.

The previous prime is 9949. The next prime is 9967. The reversal of 9950 is 599.

It is a plaindrome in base 8, base 14 and base 16.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50 + ... + 149.

It is an arithmetic number, because the mean of its divisors is an integer number (1550).

2⁹⁹⁵⁰ is an apocalyptic number.

9950 is a deficient number, since it is larger than the sum of its proper divisors (8650).

9950 is a wasteful number, since it uses less digits than its factorization.

9950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 405, while the sum is 23.

The square root of 9950 is about 99.7496867163. The cubic root of 9950 is about 21.5083796433.

It can be divided in two parts, 99 and 50, that multiplied together give a triangular number (4950 = T₉₉).

The spelling of 9950 in words is "nine thousand, nine hundred fifty".