999998298 has 80 divisors (see below), whose sum is σ = 2421979560. Its totient is φ = 306561024.

The previous prime is 999998269. The next prime is 999998309. The reversal of 999998298 is 892899999.

It can be written as a sum of positive squares in 4 ways, for example, as 252905409 + 747092889 = 15903^2 + 27333^2 .

It is a Curzon 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 39 ways as a sum of consecutive naturals, for example, 709018 + ... + 710426.

Almost surely, 2^999998298 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999998298, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1210989780).

999998298 is an abundant number, since it is smaller than the sum of its proper divisors (1421981262).

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

999998298 is a wasteful number, since it uses less digits than its factorization.

999998298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773 (or 1764 counting only the distinct ones).

The product of its digits is 68024448, while the sum is 72.

The square root of 999998298 is about 31622.7496906895. The cubic root of 999998298 is about 999.9994326663. Note that the first 3 decimals are identical.

The spelling of 999998298 in words is "nine hundred ninety-nine million, nine hundred ninety-eight thousand, two hundred ninety-eight".