4438778344 has 64 divisors (see below), whose sum is σ = 11174567040. Its totient is φ = 1596360960.

The previous prime is 4438778321. The next prime is 4438778411.

4438778344 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 4438778291 and 4438778300.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 269139 + ... + 285154.

It is an arithmetic number, because the mean of its divisors is an integer number (174602610).

Almost surely, 2^4438778344 is an apocalyptic number.

4438778344 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4438778344 is an abundant number, since it is smaller than the sum of its proper divisors (6735788696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4438778344 is a wasteful number, since it uses less digits than its factorization.

4438778344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554330 (or 554326 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 52.

The square root of 4438778344 is about 66624.1573605250. The cubic root of 4438778344 is about 1643.4423954963.

The spelling of 4438778344 in words is "four billion, four hundred thirty-eight million, seven hundred seventy-eight thousand, three hundred forty-four".