989712 has 80 divisors (see below), whose sum is σ = 2976000. Its totient is φ = 314496.

The previous prime is 989687. The next prime is 989719. The reversal of 989712 is 217989.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (989719) by changing a digit.

989712 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12489 + ... + 12567.

It is an arithmetic number, because the mean of its divisors is an integer number (37200).

2⁹⁸⁹⁷¹² 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 989712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1488000).

989712 is an abundant number, since it is smaller than the sum of its proper divisors (1986288).

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

989712 is a wasteful number, since it uses less digits than its factorization.

989712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 113 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 989712 is about 994.8427011342. The cubic root of 989712 is about 99.6558838658.

The spelling of 989712 in words is "nine hundred eighty-nine thousand, seven hundred twelve".