989906532 has 96 divisors (see below), whose sum is σ = 2549232000. Its totient is φ = 297572352.

The previous prime is 989906521. The next prime is 989906551. The reversal of 989906532 is 235609989.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 880923 + ... + 882045.

It is an arithmetic number, because the mean of its divisors is an integer number (26554500).

Almost surely, 2^989906532 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 989906532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1274616000).

989906532 is an abundant number, since it is smaller than the sum of its proper divisors (1559325468).

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

989906532 is a wasteful number, since it uses less digits than its factorization.

989906532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325 (or 1323 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 51.

The square root of 989906532 is about 31462.7801060237. The cubic root of 989906532 is about 996.6241269724.

The spelling of 989906532 in words is "nine hundred eighty-nine million, nine hundred six thousand, five hundred thirty-two".