989905112 has 64 divisors (see below), whose sum is σ = 2159047680. Its totient is φ = 416731392.

The previous prime is 989905099. The next prime is 989905139. The reversal of 989905112 is 211509989.

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 (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1892483 + ... + 1893005.

It is an arithmetic number, because the mean of its divisors is an integer number (33735120).

Almost surely, 2^989905112 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 989905112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1079523840).

989905112 is an abundant number, since it is smaller than the sum of its proper divisors (1169142568).

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

989905112 is a wasteful number, since it uses less digits than its factorization.

989905112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072 (or 1068 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 44.

The square root of 989905112 is about 31462.7575396690. The cubic root of 989905112 is about 996.6236504267.

The spelling of 989905112 in words is "nine hundred eighty-nine million, nine hundred five thousand, one hundred twelve".