989632 has 42 divisors (see below), whose sum is σ = 2293112. Its totient is φ = 415104.

The previous prime is 989629. The next prime is 989641. The reversal of 989632 is 236989.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a zygodrome in base 2 and base 6.

It is a junction number, because it is equal to n+sod(n) for n = 989591 and 989600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21033 + ... + 21079.

2⁹⁸⁹⁶³² 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 989632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1146556).

989632 is an abundant number, since it is smaller than the sum of its proper divisors (1303480).

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

989632 is an equidigital number, since it uses as much as digits as its factorization.

989632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 56 counting only the distinct ones).

The product of its digits is 23328, while the sum is 37.

The square root of 989632 is about 994.8024929603. The cubic root of 989632 is about 99.6531986788.

It can be divided in two parts, 98 and 9632, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 989632 in words is "nine hundred eighty-nine thousand, six hundred thirty-two".