170849 has 4 divisors (see below), whose sum is σ = 195264. Its totient is φ = 146436.

The previous prime is 170843. The next prime is 170851. The reversal of 170849 is 948071.

170849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 948071 = 59 ⋅16069.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-170849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (170843) 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, 12197 + ... + 12210.

It is an arithmetic number, because the mean of its divisors is an integer number (48816).

2¹⁷⁰⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

170849 is a deficient number, since it is larger than the sum of its proper divisors (24415).

170849 is an equidigital number, since it uses as much as digits as its factorization.

170849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24414.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 170849 is about 413.3388440493. The cubic root of 170849 is about 55.4886484914.

Subtracting from 170849 its sum of digits (29), we obtain a triangular number (170820 = T₅₈₄).

The spelling of 170849 in words is "one hundred seventy thousand, eight hundred forty-nine".