4440642444 has 108 divisors (see below), whose sum is σ = 13077215424. Its totient is φ = 1266850368.

The previous prime is 4440642433. The next prime is 4440642463. The reversal of 4440642444 is 4442460444.

4440642444 is a `hidden beast` number, since 4 + 4 + 4 + 0 + 642 + 4 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 4440642399 and 4440642408.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1520874 + ... + 1523790.

It is an arithmetic number, because the mean of its divisors is an integer number (121085328).

Almost surely, 2^4440642444 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 4440642444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6538607712).

4440642444 is an abundant number, since it is smaller than the sum of its proper divisors (8636572980).

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

4440642444 is a wasteful number, since it uses less digits than its factorization.

4440642444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3804 (or 3792 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 36.

The square root of 4440642444 is about 66638.1455624329. The cubic root of 4440642444 is about 1643.6724221672.

The spelling of 4440642444 in words is "four billion, four hundred forty million, six hundred forty-two thousand, four hundred forty-four".