2044809 has 12 divisors (see below), whose sum is σ = 3180996. Its totient is φ = 1258272.

The previous prime is 2044789. The next prime is 2044831. The reversal of 2044809 is 9084402.

It can be written as a sum of positive squares in 2 ways, for example, as 230400 + 1814409 = 480^2 + 1347^2 .

It is not a de Polignac number, because 2044809 - 2⁷ = 2044681 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2044849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8622 + ... + 8855.

It is an arithmetic number, because the mean of its divisors is an integer number (265083).

2^2044809 is an apocalyptic number.

It is an amenable number.

2044809 is a deficient number, since it is larger than the sum of its proper divisors (1136187).

2044809 is a wasteful number, since it uses less digits than its factorization.

2044809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17496 (or 17493 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 2044809 is about 1429.9681814642. The cubic root of 2044809 is about 126.9260941855.

The spelling of 2044809 in words is "two million, forty-four thousand, eight hundred nine".