989709085 has 8 divisors (see below), whose sum is σ = 1190889216. Its totient is φ = 789608400.

The previous prime is 989709037. The next prime is 989709109. The reversal of 989709085 is 580907989.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 989709085 - 2²⁵ = 956154653 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 267841 + ... + 271510.

It is an arithmetic number, because the mean of its divisors is an integer number (148861152).

Almost surely, 2^989709085 is an apocalyptic number.

It is an amenable number.

989709085 is a deficient number, since it is larger than the sum of its proper divisors (201180131).

989709085 is a wasteful number, since it uses less digits than its factorization.

989709085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539723.

The product of its (nonzero) digits is 1632960, while the sum is 55.

The square root of 989709085 is about 31459.6421626184. The cubic root of 989709085 is about 996.5578602686.

The spelling of 989709085 in words is "nine hundred eighty-nine million, seven hundred nine thousand, eighty-five".