989285980 has 24 divisors (see below), whose sum is σ = 2086826112. Its totient is φ = 393938112.

The previous prime is 989285971. The next prime is 989286031. The reversal of 989285980 is 89582989.

It is a happy 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, 106447 + ... + 115366.

It is an arithmetic number, because the mean of its divisors is an integer number (86951088).

Almost surely, 2^989285980 is an apocalyptic number.

It is an amenable number.

989285980 is an abundant number, since it is smaller than the sum of its proper divisors (1097540132).

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

989285980 is a wasteful number, since it uses less digits than its factorization.

989285980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222045 (or 222043 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 58.

The square root of 989285980 is about 31452.9168758638. The cubic root of 989285980 is about 996.4158290665.

The spelling of 989285980 in words is "nine hundred eighty-nine million, two hundred eighty-five thousand, nine hundred eighty".