998940280900 has 81 divisors (see below), whose sum is σ = 2194284205911. Its totient is φ = 394734679680.

The previous prime is 998940280873. The next prime is 998940280909. The reversal of 998940280900 is 9082049899.

The square root of 998940280900 is 999470.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 207879459844 + 791060821056 = 455938^2 + 889416^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998940280909) by changing a digit.

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 26 ways as a sum of consecutive naturals, for example, 889527739 + ... + 889528861.

Almost surely, 2^998940280900 is an apocalyptic number.

998940280900 is the 999470-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998940280900

998940280900 is an abundant number, since it is smaller than the sum of its proper divisors (1195343925011).

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

998940280900 is an equidigital number, since it uses as much as digits as its factorization.

998940280900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438 (or 1219 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 58.

The spelling of 998940280900 in words is "nine hundred ninety-eight billion, nine hundred forty million, two hundred eighty thousand, nine hundred".