2044409 has 4 divisors (see below), whose sum is σ = 2079120. Its totient is φ = 2009700.

The previous prime is 2044391. The next prime is 2044411. The reversal of 2044409 is 9044402.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9044402 = 2 ⋅4522201.

It is a cyclic number.

It is not a de Polignac number, because 2044409 - 2²⁰ = 995833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2044489) 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, 17267 + ... + 17384.

It is an arithmetic number, because the mean of its divisors is an integer number (519780).

2^2044409 is an apocalyptic number.

It is an amenable number.

2044409 is a deficient number, since it is larger than the sum of its proper divisors (34711).

2044409 is an equidigital number, since it uses as much as digits as its factorization.

2044409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34710.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 2044409 is about 1429.8283113717. The cubic root of 2044409 is about 126.9178173328.

The spelling of 2044409 in words is "two million, forty-four thousand, four hundred nine".