224108809 has 4 divisors (see below), whose sum is σ = 224142660. Its totient is φ = 224074960.

The previous prime is 224108791. The next prime is 224108813. The reversal of 224108809 is 908801422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 148157584 + 75951225 = 12172^2 + 8715^2 .

It is a cyclic number.

It is not a de Polignac number, because 224108809 - 2⁷ = 224108681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224108869) 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 3 ways as a sum of consecutive naturals, for example, 3382 + ... + 21439.

It is an arithmetic number, because the mean of its divisors is an integer number (56035665).

Almost surely, 2^224108809 is an apocalyptic number.

It is an amenable number.

224108809 is a deficient number, since it is larger than the sum of its proper divisors (33851).

224108809 is an equidigital number, since it uses as much as digits as its factorization.

224108809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33850.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 224108809 is about 14970.2641593260. The cubic root of 224108809 is about 607.4161142337.

The spelling of 224108809 in words is "two hundred twenty-four million, one hundred eight thousand, eight hundred nine".