998396910 has 192 divisors, whose sum is σ = 3186698112. Its totient is φ = 211673088.

The previous prime is 998396909. The next prime is 998396921. The reversal of 998396910 is 19693899.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 781192 + ... + 782468.

It is an arithmetic number, because the mean of its divisors is an integer number (16597386).

Almost surely, 2^998396910 is an apocalyptic number.

998396910 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 998396910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1593349056).

998396910 is an abundant number, since it is smaller than the sum of its proper divisors (2188301202).

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

998396910 is a wasteful number, since it uses less digits than its factorization.

998396910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387 (or 1384 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 54.

The square root of 998396910 is about 31597.4193566500. The cubic root of 998396910 is about 999.4653508679.

The spelling of 998396910 in words is "nine hundred ninety-eight million, three hundred ninety-six thousand, nine hundred ten".