104109 has 4 divisors (see below), whose sum is σ = 138816. Its totient is φ = 69404.

The previous prime is 104107. The next prime is 104113. The reversal of 104109 is 901401.

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.

It is a cyclic number.

It is not a de Polignac number, because 104109 - 2¹ = 104107 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104107) 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, 17349 + ... + 17354.

It is an arithmetic number, because the mean of its divisors is an integer number (34704).

2¹⁰⁴¹⁰⁹ is an apocalyptic number.

It is an amenable number.

104109 is a deficient number, since it is larger than the sum of its proper divisors (34707).

104109 is an equidigital number, since it uses as much as digits as its factorization.

104109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34706.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 104109 is about 322.6592630005. The cubic root of 104109 is about 47.0431172156.

The spelling of 104109 in words is "one hundred four thousand, one hundred nine".