989089560 has 96 divisors (see below), whose sum is σ = 3232710000. Its totient is φ = 262266624.

The previous prime is 989089531. The next prime is 989089561. The reversal of 989089560 is 65980989.

It is a junction number, because it is equal to n+sod(n) for n = 989089497 and 989089506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989089561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56766 + ... + 72114.

Almost surely, 2^989089560 is an apocalyptic number.

989089560 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 989089560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1616355000).

989089560 is an abundant number, since it is smaller than the sum of its proper divisors (2243620440).

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

989089560 is a wasteful number, since it uses less digits than its factorization.

989089560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15545 (or 15538 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The square root of 989089560 is about 31449.7942759567. The cubic root of 989089560 is about 996.3498794976.

The spelling of 989089560 in words is "nine hundred eighty-nine million, eighty-nine thousand, five hundred sixty".