4019980 has 36 divisors (see below), whose sum is σ = 8779680. Its totient is φ = 1546048.

The previous prime is 4019909. The next prime is 4019993. The reversal of 4019980 is 899104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16701 + ... + 16939.

It is an arithmetic number, because the mean of its divisors is an integer number (243880).

Almost surely, 2^4019980 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 4019980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4389840).

4019980 is an abundant number, since it is smaller than the sum of its proper divisors (4759700).

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

4019980 is a wasteful number, since it uses less digits than its factorization.

4019980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 4019980 is about 2004.9887780235. The cubic root of 4019980 is about 159.0039686258.

The spelling of 4019980 in words is "four million, nineteen thousand, nine hundred eighty".