10109 has 4 divisors (see below), whose sum is σ = 11040. Its totient is φ = 9180.

The previous prime is 10103. The next prime is 10111. The reversal of 10109 is 90101.

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: 90101 = 11 ⋅8191.

It is a cyclic number.

It is not a de Polignac number, because 10109 - 2⁴ = 10093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (11), and also a Moran number because the ratio is a prime number: 919 = 10109 / (1 + 0 + 1 + 0 + 9).

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 6 and base 16.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 10109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10103) 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, 449 + ... + 470.

It is an arithmetic number, because the mean of its divisors is an integer number (2760).

2¹⁰¹⁰⁹ is an apocalyptic number.

It is an amenable number.

10109 is a deficient number, since it is larger than the sum of its proper divisors (931).

10109 is an equidigital number, since it uses as much as digits as its factorization.

10109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 10109 is about 100.5435229142. The cubic root of 10109 is about 21.6223419946.

10109 divided by its sum of digits (11) gives a palindrome (919).

The spelling of 10109 in words is "ten thousand, one hundred nine".