998329860 has 240 divisors, whose sum is σ = 3452182272. Its totient is φ = 241496640.

The previous prime is 998329847. The next prime is 998329861. The reversal of 998329860 is 68923899.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 998329797 and 998329806.

It is not an unprimeable number, because it can be changed into a prime (998329861) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2155989 + ... + 2156451.

Almost surely, 2^998329860 is an apocalyptic number.

998329860 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 998329860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1726091136).

998329860 is an abundant number, since it is smaller than the sum of its proper divisors (2453852412).

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

998329860 is a wasteful number, since it uses less digits than its factorization.

998329860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 484 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The square root of 998329860 is about 31596.3583344663. The cubic root of 998329860 is about 999.4429764490.

The spelling of 998329860 in words is "nine hundred ninety-eight million, three hundred twenty-nine thousand, eight hundred sixty".