104779009 has 2 divisors, whose sum is σ = 104779010. Its totient is φ = 104779008.

The previous prime is 104778967. The next prime is 104779021. The reversal of 104779009 is 900977401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96530625 + 8248384 = 9825^2 + 2872^2 .

It is a cyclic number.

It is not a de Polignac number, because 104779009 - 2⁷ = 104778881 is a prime.

It is not a weakly prime, because it can be changed into another prime (104779069) 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, 52389504 + 52389505.

It is an arithmetic number, because the mean of its divisors is an integer number (52389505).

Almost surely, 2^104779009 is an apocalyptic number.

It is an amenable number.

104779009 is a deficient number, since it is larger than the sum of its proper divisors (1).

104779009 is an equidigital number, since it uses as much as digits as its factorization.

104779009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 104779009 is about 10236.1618295140. The cubic root of 104779009 is about 471.4381916223.

The spelling of 104779009 in words is "one hundred four million, seven hundred seventy-nine thousand, nine".