989898760 has 64 divisors (see below), whose sum is σ = 2325510000. Its totient is φ = 378749952.

The previous prime is 989898739. The next prime is 989898781. The reversal of 989898760 is 67898989.

It is an interprime number because it is at equal distance from previous prime (989898739) and next prime (989898781).

It can be written as a sum of positive squares in 8 ways, for example, as 334231524 + 655667236 = 18282^2 + 25606^2 .

It is a junction number, because it is equal to n+sod(n) for n = 989898692 and 989898701.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122526 + ... + 130354.

Almost surely, 2^989898760 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 989898760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1162755000).

989898760 is an abundant number, since it is smaller than the sum of its proper divisors (1335611240).

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

989898760 is a wasteful number, since it uses less digits than its factorization.

989898760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7978 (or 7974 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 64.

The square root of 989898760 is about 31462.6565947633. The cubic root of 989898760 is about 996.6215187184.

The spelling of 989898760 in words is "nine hundred eighty-nine million, eight hundred ninety-eight thousand, seven hundred sixty".