989080686 has 64 divisors (see below), whose sum is σ = 2406378240. Its totient is φ = 298645920.

The previous prime is 989080681. The next prime is 989080693. The reversal of 989080686 is 686080989.

It is a Harshad number since it is a multiple of its sum of digits (54).

989080686 is a strobogrammatic number because it is the same when read upside-down.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989080681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171201 + ... + 176883.

It is an arithmetic number, because the mean of its divisors is an integer number (37599660).

Almost surely, 2^989080686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989080686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1203189120).

989080686 is an abundant number, since it is smaller than the sum of its proper divisors (1417297554).

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

989080686 is a wasteful number, since it uses less digits than its factorization.

989080686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5998 (or 5992 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 989080686 is about 31449.6531936363. The cubic root of 989080686 is about 996.3468997758.

The spelling of 989080686 in words is "nine hundred eighty-nine million, eighty thousand, six hundred eighty-six".