404109 has 12 divisors (see below), whose sum is σ = 605696. Its totient is φ = 269244.

The previous prime is 404099. The next prime is 404113. The reversal of 404109 is 901404.

It is not a de Polignac number, because 404109 - 2⁷ = 403981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404091 and 404100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 589 + ... + 1074.

2⁴⁰⁴¹⁰⁹ is an apocalyptic number.

It is an amenable number.

404109 is a deficient number, since it is larger than the sum of its proper divisors (201587).

404109 is an equidigital number, since it uses as much as digits as its factorization.

404109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678 (or 1666 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 404109 is about 635.6956819108. The cubic root of 404109 is about 73.9320657274.

The spelling of 404109 in words is "four hundred four thousand, one hundred nine".