104309 has 2 divisors, whose sum is σ = 104310. Its totient is φ = 104308.

The previous prime is 104297. The next prime is 104311. The reversal of 104309 is 903401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103684 + 625 = 322^2 + 25^2 .

It is a cyclic number.

It is not a de Polignac number, because 104309 - 2⁸ = 104053 is a prime.

Together with 104311, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52154 + 52155.

It is an arithmetic number, because the mean of its divisors is an integer number (52155).

2¹⁰⁴³⁰⁹ is an apocalyptic number.

It is an amenable number.

104309 is a deficient number, since it is larger than the sum of its proper divisors (1).

104309 is an equidigital number, since it uses as much as digits as its factorization.

104309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 104309 is about 322.9690387638. The cubic root of 104309 is about 47.0732222177.

The spelling of 104309 in words is "one hundred four thousand, three hundred nine".