244209 has 16 divisors (see below), whose sum is σ = 385920. Its totient is φ = 134400.

The previous prime is 244199. The next prime is 244217. The reversal of 244209 is 902442.

It is not a de Polignac number, because 244209 - 2⁵ = 244177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (244219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409 + ... + 809.

It is an arithmetic number, because the mean of its divisors is an integer number (24120).

2²⁴⁴²⁰⁹ is an apocalyptic number.

244209 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

244209 is a deficient number, since it is larger than the sum of its proper divisors (141711).

244209 is a wasteful number, since it uses less digits than its factorization.

244209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 244209 is about 494.1750701927. The cubic root of 244209 is about 62.5058341221.

The spelling of 244209 in words is "two hundred forty-four thousand, two hundred nine".