5440209 has 8 divisors (see below), whose sum is σ = 7268640. Its totient is φ = 3619296.

The previous prime is 5440189. The next prime is 5440217. The reversal of 5440209 is 9020445.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5440209 - 2⁸ = 5439953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5440229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114 + ... + 3300.

It is an arithmetic number, because the mean of its divisors is an integer number (908580).

Almost surely, 2^5440209 is an apocalyptic number.

It is an amenable number.

5440209 is a deficient number, since it is larger than the sum of its proper divisors (1828431).

5440209 is a wasteful number, since it uses less digits than its factorization.

5440209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3759.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 5440209 is about 2332.4255615132. The cubic root of 5440209 is about 175.8754391550.

The spelling of 5440209 in words is "five million, four hundred forty thousand, two hundred nine".