171399 has 16 divisors (see below), whose sum is σ = 250880. Its totient is φ = 103680.

The previous prime is 171383. The next prime is 171401. The reversal of 171399 is 993171.

It is not a de Polignac number, because 171399 - 2⁴ = 171383 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

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 171399.

It is not an unprimeable number, because it can be changed into a prime (171329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1719 + ... + 1815.

It is an arithmetic number, because the mean of its divisors is an integer number (15680).

2¹⁷¹³⁹⁹ is an apocalyptic number.

171399 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

171399 is a deficient number, since it is larger than the sum of its proper divisors (79481).

171399 is a wasteful number, since it uses less digits than its factorization.

171399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150.

The product of its digits is 1701, while the sum is 30.

The square root of 171399 is about 414.0036231726. The cubic root of 171399 is about 55.5481280441.

The spelling of 171399 in words is "one hundred seventy-one thousand, three hundred ninety-nine".