989655912 has 96 divisors (see below), whose sum is σ = 3068083200. Its totient is φ = 282310272.

The previous prime is 989655883. The next prime is 989655913. The reversal of 989655912 is 219556989.

989655912 is a `hidden beast` number, since 9 + 89 + 6 + 559 + 1 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (989655913) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 440889 + ... + 443127.

It is an arithmetic number, because the mean of its divisors is an integer number (31959200).

Almost surely, 2^989655912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989655912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1534041600).

989655912 is an abundant number, since it is smaller than the sum of its proper divisors (2078427288).

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

989655912 is a wasteful number, since it uses less digits than its factorization.

989655912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3135 (or 3128 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 54.

The square root of 989655912 is about 31458.7970526529. The cubic root of 989655912 is about 996.5400129635.

The spelling of 989655912 in words is "nine hundred eighty-nine million, six hundred fifty-five thousand, nine hundred twelve".