220209 has 8 divisors (see below), whose sum is σ = 320352. Its totient is φ = 133440.

The previous prime is 220189. The next prime is 220217. The reversal of 220209 is 902022.

220209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220209 - 2⁵ = 220177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3304 + ... + 3369.

It is an arithmetic number, because the mean of its divisors is an integer number (40044).

2²²⁰²⁰⁹ is an apocalyptic number.

It is an amenable number.

220209 is a deficient number, since it is larger than the sum of its proper divisors (100143).

220209 is a wasteful number, since it uses less digits than its factorization.

220209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6687.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 220209 is about 469.2643178423. The cubic root of 220209 is about 60.3872178849.

The spelling of 220209 in words is "two hundred twenty thousand, two hundred nine".