10108809 has 12 divisors (see below), whose sum is σ = 14643252. Its totient is φ = 6720000.

The previous prime is 10108801. The next prime is 10108823. The reversal of 10108809 is 90880101.

It can be written as a sum of positive squares in 2 ways, for example, as 8294400 + 1814409 = 2880^2 + 1347^2 .

It is not a de Polignac number, because 10108809 - 2³ = 10108801 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10108801) 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 in 11 ways as a sum of consecutive naturals, for example, 2209 + ... + 5009.

It is an arithmetic number, because the mean of its divisors is an integer number (1220271).

Almost surely, 2^10108809 is an apocalyptic number.

It is an amenable number.

10108809 is a deficient number, since it is larger than the sum of its proper divisors (4534443).

10108809 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (10108808) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (3208).

10108809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208 (or 3205 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 10108809 is about 3179.4353272240. The cubic root of 10108809 is about 216.2220581582. Note that the first 3 decimals are identical.

The spelling of 10108809 in words is "ten million, one hundred eight thousand, eight hundred nine".