170939 has 4 divisors (see below), whose sum is σ = 174624. Its totient is φ = 167256.

The previous prime is 170927. The next prime is 170953. The reversal of 170939 is 939071.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939071 = 7 ⋅134153.

It is a cyclic number.

It is not a de Polignac number, because 170939 - 2¹² = 166843 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15 and base 16.

It is not an unprimeable number, because it can be changed into a prime (170239) 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, 1772 + ... + 1865.

It is an arithmetic number, because the mean of its divisors is an integer number (43656).

2¹⁷⁰⁹³⁹ is an apocalyptic number.

170939 is a deficient number, since it is larger than the sum of its proper divisors (3685).

170939 is an equidigital number, since it uses as much as digits as its factorization.

170939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3684.

The product of its (nonzero) digits is 1701, while the sum is 29.

The square root of 170939 is about 413.4476992317. The cubic root of 170939 is about 55.4983902355.

The spelling of 170939 in words is "one hundred seventy thousand, nine hundred thirty-nine".