104628809 has 2 divisors, whose sum is σ = 104628810. Its totient is φ = 104628808.

The previous prime is 104628793. The next prime is 104628857. The reversal of 104628809 is 908826401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76038400 + 28590409 = 8720^2 + 5347^2 .

It is a cyclic number.

It is not a de Polignac number, because 104628809 - 2⁴ = 104628793 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (104628869) 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, 52314404 + 52314405.

It is an arithmetic number, because the mean of its divisors is an integer number (52314405).

Almost surely, 2^104628809 is an apocalyptic number.

It is an amenable number.

104628809 is a deficient number, since it is larger than the sum of its proper divisors (1).

104628809 is an equidigital number, since it uses as much as digits as its factorization.

104628809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 104628809 is about 10228.8224639985. The cubic root of 104628809 is about 471.2128160779.

The spelling of 104628809 in words is "one hundred four million, six hundred twenty-eight thousand, eight hundred nine".