3989220 has 48 divisors (see below), whose sum is σ = 11829888. Its totient is φ = 1000960.

The previous prime is 3989191. The next prime is 3989233. The reversal of 3989220 is 229893.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 936 + ... + 2975.

It is an arithmetic number, because the mean of its divisors is an integer number (246456).

Almost surely, 2^3989220 is an apocalyptic number.

3989220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3989220 is an abundant number, since it is smaller than the sum of its proper divisors (7840668).

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

3989220 is a wasteful number, since it uses less digits than its factorization.

3989220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3940 (or 3938 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 3989220 is about 1997.3031817929. The cubic root of 3989220 is about 158.5973753731.

The spelling of 3989220 in words is "three million, nine hundred eighty-nine thousand, two hundred twenty".