5444288639 has 16 divisors (see below), whose sum is σ = 5720440320. Its totient is φ = 5174615040.

The previous prime is 5444288617. The next prime is 5444288653. The reversal of 5444288639 is 9368824445.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5444288639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5444288659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 532217 + ... + 542349.

It is an arithmetic number, because the mean of its divisors is an integer number (357527520).

Almost surely, 2^5444288639 is an apocalyptic number.

5444288639 is a deficient number, since it is larger than the sum of its proper divisors (276151681).

5444288639 is a wasteful number, since it uses less digits than its factorization.

5444288639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10450.

The product of its digits is 6635520, while the sum is 53.

The square root of 5444288639 is about 73785.4229438308. The cubic root of 5444288639 is about 1759.1939145056.

The spelling of 5444288639 in words is "five billion, four hundred forty-four million, two hundred eighty-eight thousand, six hundred thirty-nine".