104405209 has 8 divisors (see below), whose sum is σ = 110294240. Its totient is φ = 98555616.

The previous prime is 104405201. The next prime is 104405237. The reversal of 104405209 is 902504401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 104405209 - 2³ = 104405201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (104405201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4332 + ... + 15085.

It is an arithmetic number, because the mean of its divisors is an integer number (13786780).

Almost surely, 2^104405209 is an apocalyptic number.

104405209 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

104405209 is a deficient number, since it is larger than the sum of its proper divisors (5889031).

104405209 is a wasteful number, since it uses less digits than its factorization.

104405209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19719.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 104405209 is about 10217.8867188866. The cubic root of 104405209 is about 470.8769037150.

The spelling of 104405209 in words is "one hundred four million, four hundred five thousand, two hundred nine".