100488809 has 2 divisors, whose sum is σ = 100488810. Its totient is φ = 100488808.

The previous prime is 100488803. The next prime is 100488833. The reversal of 100488809 is 908884001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83083225 + 17405584 = 9115^2 + 4172^2 .

It is a cyclic number.

It is not a de Polignac number, because 100488809 - 2²⁰ = 99440233 is a prime.

It is not a weakly prime, because it can be changed into another prime (100488803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50244404 + 50244405.

It is an arithmetic number, because the mean of its divisors is an integer number (50244405).

Almost surely, 2^100488809 is an apocalyptic number.

It is an amenable number.

100488809 is a deficient number, since it is larger than the sum of its proper divisors (1).

100488809 is an equidigital number, since it uses as much as digits as its factorization.

100488809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 100488809 is about 10024.4106559937. The cubic root of 100488809 is about 464.9139379016.

The spelling of 100488809 in words is "one hundred million, four hundred eighty-eight thousand, eight hundred nine".