4440727644 has 12 divisors (see below), whose sum is σ = 10361697864. Its totient is φ = 1480242544.

The previous prime is 4440727601. The next prime is 4440727651. The reversal of 4440727644 is 4467270444.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 4440727596 and 4440727605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185030307 + ... + 185030330.

It is an arithmetic number, because the mean of its divisors is an integer number (863474822).

Almost surely, 2^4440727644 is an apocalyptic number.

It is an amenable number.

4440727644 is an abundant number, since it is smaller than the sum of its proper divisors (5920970220).

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

4440727644 is a wasteful number, since it uses less digits than its factorization.

4440727644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370060644 (or 370060642 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 42.

The square root of 4440727644 is about 66638.7848328584. The cubic root of 4440727644 is about 1643.6829341593.

The spelling of 4440727644 in words is "four billion, four hundred forty million, seven hundred twenty-seven thousand, six hundred forty-four".