5440809 has 16 divisors (see below), whose sum is σ = 8017920. Its totient is φ = 3254160.

The previous prime is 5440793. The next prime is 5440819. The reversal of 5440809 is 9080445.

It is not a de Polignac number, because 5440809 - 2⁴ = 5440793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5440819) 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, 1564 + ... + 3650.

It is an arithmetic number, because the mean of its divisors is an integer number (501120).

Almost surely, 2^5440809 is an apocalyptic number.

It is an amenable number.

5440809 is a deficient number, since it is larger than the sum of its proper divisors (2577111).

5440809 is a wasteful number, since it uses less digits than its factorization.

5440809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 5440809 is about 2332.5541794351. The cubic root of 5440809 is about 175.8819046777.

The spelling of 5440809 in words is "five million, four hundred forty thousand, eight hundred nine".