989727612 has 12 divisors (see below), whose sum is σ = 2309364456. Its totient is φ = 329909200.

The previous prime is 989727611. The next prime is 989727617. The reversal of 989727612 is 216727989.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989727611) 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 3 ways as a sum of consecutive naturals, for example, 41238639 + ... + 41238662.

It is an arithmetic number, because the mean of its divisors is an integer number (192447038).

Almost surely, 2^989727612 is an apocalyptic number.

It is an amenable number.

989727612 is an abundant number, since it is smaller than the sum of its proper divisors (1319636844).

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

989727612 is a wasteful number, since it uses less digits than its factorization.

989727612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82477308 (or 82477306 counting only the distinct ones).

The product of its digits is 762048, while the sum is 51.

The square root of 989727612 is about 31459.9366178637. The cubic root of 989727612 is about 996.5640786320.

The spelling of 989727612 in words is "nine hundred eighty-nine million, seven hundred twenty-seven thousand, six hundred twelve".