171994 has 8 divisors (see below), whose sum is σ = 269280. Its totient is φ = 82236.

The previous prime is 171947. The next prime is 172001. The reversal of 171994 is 499171.

171994 is nontrivially palindromic in base 4.

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

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, 1824 + ... + 1915.

It is an arithmetic number, because the mean of its divisors is an integer number (33660).

2¹⁷¹⁹⁹⁴ is an apocalyptic number.

171994 is a deficient number, since it is larger than the sum of its proper divisors (97286).

171994 is a wasteful number, since it uses less digits than its factorization.

171994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3764.

The product of its digits is 2268, while the sum is 31.

The square root of 171994 is about 414.7215933611. The cubic root of 171994 is about 55.6123309952.

The spelling of 171994 in words is "one hundred seventy-one thousand, nine hundred ninety-four".