3855066444 has 72 divisors (see below), whose sum is σ = 9993215232. Its totient is φ = 1252389600.

The previous prime is 3855066443. The next prime is 3855066461. The reversal of 3855066444 is 4446605583.

3855066444 is a `hidden beast` number, since 3 + 85 + 506 + 64 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 3855066444.

It is not an unprimeable number, because it can be changed into a prime (3855066443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 776169 + ... + 781119.

It is an arithmetic number, because the mean of its divisors is an integer number (138794656).

Almost surely, 2^3855066444 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 3855066444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4996607616).

3855066444 is an abundant number, since it is smaller than the sum of its proper divisors (6138148788).

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

3855066444 is a wasteful number, since it uses less digits than its factorization.

3855066444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5507 (or 5502 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 45.

The square root of 3855066444 is about 62089.1813764685. The cubic root of 3855066444 is about 1567.9924092675.

The spelling of 3855066444 in words is "three billion, eight hundred fifty-five million, sixty-six thousand, four hundred forty-four".