3944218880 has 72 divisors (see below), whose sum is σ = 10797323712. Its totient is φ = 1352300544.

The previous prime is 3944218879. The next prime is 3944218933. The reversal of 3944218880 is 888124493.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211142 + ... + 229061.

Almost surely, 2^3944218880 is an apocalyptic number.

It is an amenable number.

3944218880 is an abundant number, since it is smaller than the sum of its proper divisors (6853104832).

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

3944218880 is an equidigital number, since it uses as much as digits as its factorization.

3944218880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440231 (or 440217 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 47.

The square root of 3944218880 is about 62803.0164880637. The cubic root of 3944218880 is about 1579.9875659973.

The spelling of 3944218880 in words is "three billion, nine hundred forty-four million, two hundred eighteen thousand, eight hundred eighty".