91994 has 8 divisors (see below), whose sum is σ = 157728. Its totient is φ = 39420.

The previous prime is 91969. The next prime is 91997. The reversal of 91994 is 49919.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 91994.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 91994.

It is not an unprimeable number, because it can be changed into a prime (91997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3272 + ... + 3299.

It is an arithmetic number, because the mean of its divisors is an integer number (19716).

2⁹¹⁹⁹⁴ is an apocalyptic number.

91994 is a deficient number, since it is larger than the sum of its proper divisors (65734).

91994 is a wasteful number, since it uses less digits than its factorization.

91994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6580.

The product of its digits is 2916, while the sum is 32.

The square root of 91994 is about 303.3051268937. The cubic root of 91994 is about 45.1425929514.

The spelling of 91994 in words is "ninety-one thousand, nine hundred ninety-four".