989041086 has 144 divisors (see below), whose sum is σ = 2509863408. Its totient is φ = 279072000.

The previous prime is 989041063. The next prime is 989041111. The reversal of 989041086 is 680140989.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7219210 + ... + 7219346.

It is an arithmetic number, because the mean of its divisors is an integer number (17429607).

Almost surely, 2^989041086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989041086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1254931704).

989041086 is an abundant number, since it is smaller than the sum of its proper divisors (1520822322).

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

989041086 is a wasteful number, since it uses less digits than its factorization.

989041086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 989041086 is about 31449.0236096449. The cubic root of 989041086 is about 996.3336026254. Note that the first 3 decimals are identical.

The spelling of 989041086 in words is "nine hundred eighty-nine million, forty-one thousand, eighty-six".