4066444220 has 96 divisors (see below), whose sum is σ = 9432729600. Its totient is φ = 1466553600.

The previous prime is 4066444169. The next prime is 4066444237. The reversal of 4066444220 is 224446604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 715751 + ... + 721409.

It is an arithmetic number, because the mean of its divisors is an integer number (98257600).

Almost surely, 2^4066444220 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 4066444220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4716364800).

4066444220 is an abundant number, since it is smaller than the sum of its proper divisors (5366285380).

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

4066444220 is a wasteful number, since it uses less digits than its factorization.

4066444220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5779 (or 5777 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

The square root of 4066444220 is about 63768.6774208153. The cubic root of 4066444220 is about 1596.1422974530.

The spelling of 4066444220 in words is "four billion, sixty-six million, four hundred forty-four thousand, two hundred twenty".