9994 has 8 divisors (see below), whose sum is σ = 15840.
Its totient is φ = 4716.
The previous prime is 9973. The next prime is 10007. The reversal of 9994 is 4999.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a nialpdrome in base 10.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94 + ... + 169.
It is an arithmetic number, because the mean of its divisors is an integer number (1980).
29994 is an apocalyptic number.
9994 is a deficient number, since it is larger than the sum of its proper divisors (5846).
9994 is a wasteful number, since it uses less digits than its factorization.
9994 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 284.
The product of its digits is 2916, while the sum is 31.
The square root of 9994 is about 99.9699954986.
The cubic root of 9994 is about 21.5400371689.
The spelling of 9994 in words is "nine thousand, nine hundred ninety-four".