169109 has 4 divisors (see below), whose sum is σ = 170016. Its totient is φ = 168204.

The previous prime is 169097. The next prime is 169111. The reversal of 169109 is 901961.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 901961 = 83 ⋅10867.

It is a cyclic number.

It is not a de Polignac number, because 169109 - 2⁴ = 169093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169129) 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, 59 + ... + 584.

It is an arithmetic number, because the mean of its divisors is an integer number (42504).

2¹⁶⁹¹⁰⁹ is an apocalyptic number.

It is an amenable number.

169109 is a deficient number, since it is larger than the sum of its proper divisors (907).

169109 is an equidigital number, since it uses as much as digits as its factorization.

169109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 169109 is about 411.2286468621. The cubic root of 169109 is about 55.2996319029.

The spelling of 169109 in words is "one hundred sixty-nine thousand, one hundred nine".