104130809 has 2 divisors, whose sum is σ = 104130810. Its totient is φ = 104130808.

The previous prime is 104130799. The next prime is 104130833. The reversal of 104130809 is 908031401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97515625 + 6615184 = 9875^2 + 2572^2 .

It is a cyclic number.

It is not a de Polignac number, because 104130809 - 2⁸ = 104130553 is a prime.

It is not a weakly prime, because it can be changed into another prime (104130109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52065404 + 52065405.

It is an arithmetic number, because the mean of its divisors is an integer number (52065405).

Almost surely, 2^104130809 is an apocalyptic number.

It is an amenable number.

104130809 is a deficient number, since it is larger than the sum of its proper divisors (1).

104130809 is an equidigital number, since it uses as much as digits as its factorization.

104130809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 104130809 is about 10204.4504506612. The cubic root of 104130809 is about 470.4640188744.

The spelling of 104130809 in words is "one hundred four million, one hundred thirty thousand, eight hundred nine".