998440080 has 160 divisors (see below), whose sum is σ = 3403496448. Its totient is φ = 240115200.

The previous prime is 998440057. The next prime is 998440081. The reversal of 998440080 is 80044899.

998440080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (998440081) 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, 344397 + ... + 347283.

Almost surely, 2^998440080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998440080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1701748224).

998440080 is an abundant number, since it is smaller than the sum of its proper divisors (2405056368).

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

998440080 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (998440079) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (3039).

998440080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3045 (or 3039 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 998440080 is about 31598.1024746740. The cubic root of 998440080 is about 999.4797560598.

The spelling of 998440080 in words is "nine hundred ninety-eight million, four hundred forty thousand, eighty".