109005 has 24 divisors (see below), whose sum is σ = 193248. Its totient is φ = 52416.

The previous prime is 109001. The next prime is 109013. The reversal of 109005 is 500901.

It is not a de Polignac number, because 109005 - 2² = 109001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2514 + ... + 2556.

It is an arithmetic number, because the mean of its divisors is an integer number (8052).

2¹⁰⁹⁰⁰⁵ is an apocalyptic number.

109005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

109005 is a deficient number, since it is larger than the sum of its proper divisors (84243).

109005 is a wasteful number, since it uses less digits than its factorization.

109005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 45, while the sum is 15.

The square root of 109005 is about 330.1590525792. The cubic root of 109005 is about 47.7692922053.

Adding to 109005 its reverse (500901), we get a palindrome (609906).

The spelling of 109005 in words is "one hundred nine thousand, five".