171398 has 8 divisors (see below), whose sum is σ = 263208. Its totient is φ = 83664.

The previous prime is 171383. The next prime is 171401. The reversal of 171398 is 893171.

171398 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 171398.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 171398.

It is an unprimeable number.

171398 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 911 + ... + 1082.

It is an arithmetic number, because the mean of its divisors is an integer number (32901).

2¹⁷¹³⁹⁸ is an apocalyptic number.

171398 is a deficient number, since it is larger than the sum of its proper divisors (91810).

171398 is a wasteful number, since it uses less digits than its factorization.

171398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038.

The product of its digits is 1512, while the sum is 29.

The square root of 171398 is about 414.0024154519. The cubic root of 171398 is about 55.5480200150.

The spelling of 171398 in words is "one hundred seventy-one thousand, three hundred ninety-eight".