4444638380 has 96 divisors (see below), whose sum is σ = 11626481664. Its totient is φ = 1389659904.

The previous prime is 4444638349. The next prime is 4444638383. The reversal of 4444638380 is 838364444.

It is not an unprimeable number, because it can be changed into a prime (4444638383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136349 + ... + 165771.

It is an arithmetic number, because the mean of its divisors is an integer number (121109184).

Almost surely, 2^4444638380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4444638380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5813240832).

4444638380 is an abundant number, since it is smaller than the sum of its proper divisors (7181843284).

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

4444638380 is a wasteful number, since it uses less digits than its factorization.

4444638380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29535 (or 29533 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 44.

The square root of 4444638380 is about 66668.1211674665. The cubic root of 4444638380 is about 1644.1652968496.

The spelling of 4444638380 in words is "four billion, four hundred forty-four million, six hundred thirty-eight thousand, three hundred eighty".