989865360 has 280 divisors, whose sum is σ = 3766705344. Its totient is φ = 239811840.

The previous prime is 989865343. The next prime is 989865367. The reversal of 989865360 is 63568989.

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 = 989865297 and 989865306.

It is not an unprimeable number, because it can be changed into a prime (989865367) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 640749 + ... + 642291.

Almost surely, 2^989865360 is an apocalyptic number.

989865360 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 989865360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1883352672).

989865360 is an abundant number, since it is smaller than the sum of its proper divisors (2776839984).

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

989865360 is a wasteful number, since it uses less digits than its factorization.

989865360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585 (or 1564 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The square root of 989865360 is about 31462.1258023040. The cubic root of 989865360 is about 996.6103096485.

The spelling of 989865360 in words is "nine hundred eighty-nine million, eight hundred sixty-five thousand, three hundred sixty".