104186309 has 4 divisors (see below), whose sum is σ = 104788716. Its totient is φ = 103583904.

The previous prime is 104186279. The next prime is 104186317. The reversal of 104186309 is 903681401.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57304900 + 46881409 = 7570^2 + 6847^2 .

It is a cyclic number.

It is not a de Polignac number, because 104186309 - 2¹² = 104182213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104186359) 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 3 ways as a sum of consecutive naturals, for example, 300944 + ... + 301289.

It is an arithmetic number, because the mean of its divisors is an integer number (26197179).

Almost surely, 2^104186309 is an apocalyptic number.

It is an amenable number.

104186309 is a deficient number, since it is larger than the sum of its proper divisors (602407).

104186309 is an equidigital number, since it uses as much as digits as its factorization.

104186309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602406.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 104186309 is about 10207.1694901182. The cubic root of 104186309 is about 470.5475872112.

The spelling of 104186309 in words is "one hundred four million, one hundred eighty-six thousand, three hundred nine".