4989189920 has 384 divisors, whose sum is σ = 14923948032. Its totient is φ = 1548288000.

The previous prime is 4989189871. The next prime is 4989189929. The reversal of 4989189920 is 299819894.

It is a self number, because there is not a number n which added to its sum of digits gives 4989189920.

It is not an unprimeable number, because it can be changed into a prime (4989189929) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39284897 + ... + 39285023.

It is an arithmetic number, because the mean of its divisors is an integer number (38864448).

Almost surely, 2^4989189920 is an apocalyptic number.

4989189920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4989189920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7461974016).

4989189920 is an abundant number, since it is smaller than the sum of its proper divisors (9934758112).

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

4989189920 is a wasteful number, since it uses less digits than its factorization.

4989189920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 59.

The square root of 4989189920 is about 70634.1979497184. The cubic root of 4989189920 is about 1708.7427257160.

The spelling of 4989189920 in words is "four billion, nine hundred eighty-nine million, one hundred eighty-nine thousand, nine hundred twenty".