103799809 has 2 divisors, whose sum is σ = 103799810. Its totient is φ = 103799808.

The previous prime is 103799789. The next prime is 103799819. The reversal of 103799809 is 908997301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92929600 + 10870209 = 9640^2 + 3297^2 .

It is a cyclic number.

It is not a de Polignac number, because 103799809 - 2⁵ = 103799777 is a prime.

It is not a weakly prime, because it can be changed into another prime (103799819) 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, 51899904 + 51899905.

It is an arithmetic number, because the mean of its divisors is an integer number (51899905).

Almost surely, 2^103799809 is an apocalyptic number.

It is an amenable number.

103799809 is a deficient number, since it is larger than the sum of its proper divisors (1).

103799809 is an equidigital number, since it uses as much as digits as its factorization.

103799809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 103799809 is about 10188.2191279929. The cubic root of 103799809 is about 469.9650026755.

The spelling of 103799809 in words is "one hundred three million, seven hundred ninety-nine thousand, eight hundred nine".