3944423220 has 48 divisors (see below), whose sum is σ = 11054691648. Its totient is φ = 1050864640.

The previous prime is 3944423209. The next prime is 3944423227. The reversal of 3944423220 is 223244493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3944423227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35332 + ... + 95588.

It is an arithmetic number, because the mean of its divisors is an integer number (230306076).

Almost surely, 2^3944423220 is an apocalyptic number.

3944423220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3944423220 is an abundant number, since it is smaller than the sum of its proper divisors (7110268428).

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

3944423220 is a wasteful number, since it uses less digits than its factorization.

3944423220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61360 (or 61358 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 33.

The square root of 3944423220 is about 62804.6432996797. The cubic root of 3944423220 is about 1580.0148505788.

The spelling of 3944423220 in words is "three billion, nine hundred forty-four million, four hundred twenty-three thousand, two hundred twenty".