2444390809 has 16 divisors (see below), whose sum is σ = 2807775360. Its totient is φ = 2084584320.

The previous prime is 2444390807. The next prime is 2444390813. The reversal of 2444390809 is 9080934442.

It is not a de Polignac number, because 2444390809 - 2¹ = 2444390807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2444390807) 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, 1417822 + ... + 1419544.

It is an arithmetic number, because the mean of its divisors is an integer number (175485960).

Almost surely, 2^2444390809 is an apocalyptic number.

It is an amenable number.

2444390809 is a deficient number, since it is larger than the sum of its proper divisors (363384551).

2444390809 is a wasteful number, since it uses less digits than its factorization.

2444390809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2640.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 2444390809 is about 49440.7808291900. The cubic root of 2444390809 is about 1347.0701543609.

The spelling of 2444390809 in words is "two billion, four hundred forty-four million, three hundred ninety thousand, eight hundred nine".