4389820 has 12 divisors (see below), whose sum is σ = 9218664. Its totient is φ = 1755920.

The previous prime is 4389809. The next prime is 4389821. The reversal of 4389820 is 289834.

4389820 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4389821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109726 + ... + 109765.

It is an arithmetic number, because the mean of its divisors is an integer number (768222).

Almost surely, 2^4389820 is an apocalyptic number.

It is an amenable number.

4389820 is an abundant number, since it is smaller than the sum of its proper divisors (4828844).

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

4389820 is a wasteful number, since it uses less digits than its factorization.

4389820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219500 (or 219498 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 4389820 is about 2095.1897288790. The cubic root of 4389820 is about 163.7377824344.

The spelling of 4389820 in words is "four million, three hundred eighty-nine thousand, eight hundred twenty".