4444444380 has 48 divisors (see below), whose sum is σ = 12533996160. Its totient is φ = 1176656448.

The previous prime is 4444444369. The next prime is 4444444393. The reversal of 4444444380 is 834444444.

It is a congruent number.

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, 258114 + ... + 274793.

It is an arithmetic number, because the mean of its divisors is an integer number (261124920).

Almost surely, 2^4444444380 is an apocalyptic number.

It is an amenable number.

4444444380 is an abundant number, since it is smaller than the sum of its proper divisors (8089551780).

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

4444444380 is a wasteful number, since it uses less digits than its factorization.

4444444380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533058 (or 533056 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 39.

The square root of 4444444380 is about 66666.6661833333. Note that the first 3 decimals coincide. The cubic root of 4444444380 is about 1644.1413749403.

The spelling of 4444444380 in words is "four billion, four hundred forty-four million, four hundred forty-four thousand, three hundred eighty".