989080685 has 4 divisors (see below), whose sum is σ = 1186896828. Its totient is φ = 791264544.

The previous prime is 989080681. The next prime is 989080693. The reversal of 989080685 is 586080989.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 130942249 + 858138436 = 11443^2 + 29294^2 .

It is a cyclic number.

It is not a de Polignac number, because 989080685 - 2² = 989080681 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 98908064 + ... + 98908073.

It is an arithmetic number, because the mean of its divisors is an integer number (296724207).

Almost surely, 2^989080685 is an apocalyptic number.

It is an amenable number.

989080685 is a deficient number, since it is larger than the sum of its proper divisors (197816143).

989080685 is a wasteful number, since it uses less digits than its factorization.

989080685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197816142.

The product of its (nonzero) digits is 1244160, while the sum is 53.

The square root of 989080685 is about 31449.6531777379. The cubic root of 989080685 is about 996.3468994400.

The spelling of 989080685 in words is "nine hundred eighty-nine million, eighty thousand, six hundred eighty-five".