103904609 has 2 divisors, whose sum is σ = 103904610. Its totient is φ = 103904608.

The previous prime is 103904599. The next prime is 103904611. The reversal of 103904609 is 906409301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70090384 + 33814225 = 8372^2 + 5815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103904609 is a prime.

Together with 103904611, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (103904699) 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 as a sum of consecutive naturals, namely, 51952304 + 51952305.

It is an arithmetic number, because the mean of its divisors is an integer number (51952305).

Almost surely, 2^103904609 is an apocalyptic number.

It is an amenable number.

103904609 is a deficient number, since it is larger than the sum of its proper divisors (1).

103904609 is an equidigital number, since it uses as much as digits as its factorization.

103904609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 103904609 is about 10193.3610256873. The cubic root of 103904609 is about 470.1231139682.

The spelling of 103904609 in words is "one hundred three million, nine hundred four thousand, six hundred nine".