2044209 has 4 divisors (see below), whose sum is σ = 2725616. Its totient is φ = 1362804.

The previous prime is 2044201. The next prime is 2044243. The reversal of 2044209 is 9024402.

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 not a de Polignac number, because 2044209 - 2³ = 2044201 is a prime.

It is a D-number.

It is a Duffinian number.

2044209 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2044201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 340699 + ... + 340704.

It is an arithmetic number, because the mean of its divisors is an integer number (681404).

2^2044209 is an apocalyptic number.

It is an amenable number.

2044209 is a deficient number, since it is larger than the sum of its proper divisors (681407).

2044209 is an equidigital number, since it uses as much as digits as its factorization.

2044209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681406.

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

The square root of 2044209 is about 1429.7583711942. The cubic root of 2044209 is about 126.9136785017.

The spelling of 2044209 in words is "two million, forty-four thousand, two hundred nine".