4989820 has 48 divisors (see below), whose sum is σ = 11759328. Its totient is φ = 1762560.

The previous prime is 4989811. The next prime is 4989821. The reversal of 4989820 is 289894.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4989821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7834 + ... + 8446.

It is an arithmetic number, because the mean of its divisors is an integer number (244986).

Almost surely, 2^4989820 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 4989820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5879664).

4989820 is an abundant number, since it is smaller than the sum of its proper divisors (6769508).

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

4989820 is a wasteful number, since it uses less digits than its factorization.

4989820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 668 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 4989820 is about 2233.7905004722. The cubic root of 4989820 is about 170.8814654514.

The spelling of 4989820 in words is "four million, nine hundred eighty-nine thousand, eight hundred twenty".