16994 has 8 divisors (see below), whose sum is σ = 26460. Its totient is φ = 8176.

The previous prime is 16993. The next prime is 17011. The reversal of 16994 is 49961.

It can be written as a sum of positive squares in 2 ways, for example, as 15625 + 1369 = 125^2 + 37^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (29).

Its product of digits (1944) is a multiple of the sum of its prime divisors (324).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 16994.

It is not an unprimeable number, because it can be changed into a prime (16993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89 + ... + 204.

2¹⁶⁹⁹⁴ is an apocalyptic number.

16994 is a deficient number, since it is larger than the sum of its proper divisors (9466).

16994 is a wasteful number, since it uses less digits than its factorization.

16994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324.

The product of its digits is 1944, while the sum is 29.

The square root of 16994 is about 130.3610371238. The cubic root of 16994 is about 25.7097905135.

The spelling of 16994 in words is "sixteen thousand, nine hundred ninety-four".