104540609 has 2 divisors, whose sum is σ = 104540610. Its totient is φ = 104540608.

The previous prime is 104540581. The next prime is 104540617. The reversal of 104540609 is 906045401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103632400 + 908209 = 10180^2 + 953^2 .

It is a cyclic number.

It is not a de Polignac number, because 104540609 - 2²⁴ = 87763393 is a prime.

It is not a weakly prime, because it can be changed into another prime (104540629) 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, 52270304 + 52270305.

It is an arithmetic number, because the mean of its divisors is an integer number (52270305).

Almost surely, 2^104540609 is an apocalyptic number.

It is an amenable number.

104540609 is a deficient number, since it is larger than the sum of its proper divisors (1).

104540609 is an equidigital number, since it uses as much as digits as its factorization.

104540609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 104540609 is about 10224.5102083180. The cubic root of 104540609 is about 471.0803711850.

The spelling of 104540609 in words is "one hundred four million, five hundred forty thousand, six hundred nine".