998938980 has 288 divisors, whose sum is σ = 3439922304. Its totient is φ = 241864704.

The previous prime is 998938933. The next prime is 998938999. The reversal of 998938980 is 89839899.

998938980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6128379 + ... + 6128541.

Almost surely, 2^998938980 is an apocalyptic number.

998938980 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998938980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1719961152).

998938980 is an abundant number, since it is smaller than the sum of its proper divisors (2440983324).

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

998938980 is a wasteful number, since it uses less digits than its factorization.

998938980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 10077696, while the sum is 63.

The square root of 998938980 is about 31605.9959501358. The cubic root of 998938980 is about 999.6462015081.

The spelling of 998938980 in words is "nine hundred ninety-eight million, nine hundred thirty-eight thousand, nine hundred eighty".