989843085 has 80 divisors (see below), whose sum is σ = 2212290432. Its totient is φ = 411350400.

The previous prime is 989843039. The next prime is 989843087. The reversal of 989843085 is 580348989.

It is a happy number.

It is not a de Polignac number, because 989843085 - 2⁷ = 989842957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989843087) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 15315 + ... + 47055.

Almost surely, 2^989843085 is an apocalyptic number.

It is an amenable number.

989843085 is an abundant number, since it is smaller than the sum of its proper divisors (1222447347).

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

989843085 is a wasteful number, since it uses less digits than its factorization.

989843085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31776 (or 31767 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The square root of 989843085 is about 31461.7718032535. The cubic root of 989843085 is about 996.6028339984.

The spelling of 989843085 in words is "nine hundred eighty-nine million, eight hundred forty-three thousand, eighty-five".