44209 has 4 divisors (see below), whose sum is σ = 48240. Its totient is φ = 40180.

The previous prime is 44207. The next prime is 44221. The reversal of 44209 is 90244.

44209 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 44209 - 2¹ = 44207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44201) 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, 1999 + ... + 2020.

It is an arithmetic number, because the mean of its divisors is an integer number (12060).

2⁴⁴²⁰⁹ is an apocalyptic number.

It is an amenable number.

44209 is a deficient number, since it is larger than the sum of its proper divisors (4031).

44209 is a wasteful number, since it uses less digits than its factorization.

44209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 44209 is about 210.2593636440. The cubic root of 44209 is about 35.3592922642.

It can be divided in two parts, 44 and 209, that added together give a triangular number (253 = T₂₂).

The spelling of 44209 in words is "forty-four thousand, two hundred nine".