998485488 has 320 divisors, whose sum is σ = 3849753600. Its totient is φ = 239293440.

The previous prime is 998485483. The next prime is 998485489. The reversal of 998485488 is 884584899.

998485488 is a `hidden beast` number, since 9 + 9 + 84 + 8 + 548 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998485483) 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 63 ways as a sum of consecutive naturals, for example, 431278 + ... + 433586.

It is an arithmetic number, because the mean of its divisors is an integer number (12030480).

Almost surely, 2^998485488 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 998485488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1924876800).

998485488 is an abundant number, since it is smaller than the sum of its proper divisors (2851268112).

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

998485488 is a wasteful number, since it uses less digits than its factorization.

998485488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357 (or 2345 counting only the distinct ones).

The product of its digits is 26542080, while the sum is 63.

The square root of 998485488 is about 31598.8209906636. The cubic root of 998485488 is about 999.4949075913.

The spelling of 998485488 in words is "nine hundred ninety-eight million, four hundred eighty-five thousand, four hundred eighty-eight".