5440638279 has 8 divisors (see below), whose sum is σ = 7300390000. Its totient is φ = 3603989376.

The previous prime is 5440638271. The next prime is 5440638283. The reversal of 5440638279 is 9728360445.

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

It is not a de Polignac number, because 5440638279 - 2³ = 5440638271 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 (5440638271) 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, 5775154 + ... + 5776095.

It is an arithmetic number, because the mean of its divisors is an integer number (912548750).

Almost surely, 2^5440638279 is an apocalyptic number.

5440638279 is a deficient number, since it is larger than the sum of its proper divisors (1859751721).

5440638279 is a wasteful number, since it uses less digits than its factorization.

5440638279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11551409.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The square root of 5440638279 is about 73760.6824737949. The cubic root of 5440638279 is about 1758.8006505862.

The spelling of 5440638279 in words is "five billion, four hundred forty million, six hundred thirty-eight thousand, two hundred seventy-nine".