224009 has 4 divisors (see below), whose sum is σ = 237204. Its totient is φ = 210816.

The previous prime is 223999. The next prime is 224011. The reversal of 224009 is 900422.

224009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 160000 + 64009 = 400^2 + 253^2 .

It is a cyclic number.

It is not a de Polignac number, because 224009 - 2⁸ = 223753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 13177 = 224009 / (2 + 2 + 4 + 0 + 0 + 9).

It is a Duffinian number.

It is a nialpdrome in base 8 and base 12.

It is not an unprimeable number, because it can be changed into a prime (224069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6572 + ... + 6605.

It is an arithmetic number, because the mean of its divisors is an integer number (59301).

2²²⁴⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

224009 is a deficient number, since it is larger than the sum of its proper divisors (13195).

224009 is a wasteful number, since it uses less digits than its factorization.

224009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13194.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 224009 is about 473.2958905378. The cubic root of 224009 is about 60.7325927987.

The spelling of 224009 in words is "two hundred twenty-four thousand, nine".