998843860 has 96 divisors (see below), whose sum is σ = 2480260608. Its totient is φ = 330739200.

The previous prime is 998843831. The next prime is 998843869. The reversal of 998843860 is 68348899.

998843860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

998843860 is a nontrivial binomial coefficient, being equal to C(44696, 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998843869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 781542 + ... + 782818.

It is an arithmetic number, because the mean of its divisors is an integer number (25836048).

Almost surely, 2^998843860 is an apocalyptic number.

998843860 is the 44695-th triangular number and also the 22348-th hexagonal number.

998843860 is the 14899-th centered nonagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998843860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1240130304).

998843860 is an abundant number, since it is smaller than the sum of its proper divisors (1481416748).

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

998843860 is a wasteful number, since it uses less digits than its factorization.

998843860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481 (or 1479 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 55.

The square root of 998843860 is about 31604.4911365458. The cubic root of 998843860 is about 999.6144713868.

The spelling of 998843860 in words is "nine hundred ninety-eight million, eight hundred forty-three thousand, eight hundred sixty".