4989798 has 72 divisors (see below), whose sum is σ = 12448800. Its totient is φ = 1441440.

The previous prime is 4989797. The next prime is 4989811. The reversal of 4989798 is 8979894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4989797) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 63123 + ... + 63201.

It is an arithmetic number, because the mean of its divisors is an integer number (172900).

Almost surely, 2^4989798 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4989798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6224400).

4989798 is an abundant number, since it is smaller than the sum of its proper divisors (7459002).

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

4989798 is a wasteful number, since it uses less digits than its factorization.

4989798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 124 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 4989798 is about 2233.7855761017. The cubic root of 4989798 is about 170.8812143135.

It can be divided in two parts, 498 and 9798, that added together give a triangular number (10296 = T₁₄₃).

The spelling of 4989798 in words is "four million, nine hundred eighty-nine thousand, seven hundred ninety-eight".