989389916 has 24 divisors (see below), whose sum is σ = 1780778496. Its totient is φ = 480634560.

The previous prime is 989389913. The next prime is 989389931. The reversal of 989389916 is 619983989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989389913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107621 + ... + 116451.

It is an arithmetic number, because the mean of its divisors is an integer number (74199104).

Almost surely, 2^989389916 is an apocalyptic number.

It is an amenable number.

989389916 is a deficient number, since it is larger than the sum of its proper divisors (791388580).

989389916 is a wasteful number, since it uses less digits than its factorization.

989389916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9629 (or 9627 counting only the distinct ones).

The product of its digits is 7558272, while the sum is 62.

The square root of 989389916 is about 31454.5690798650. The cubic root of 989389916 is about 996.4507228690.

The spelling of 989389916 in words is "nine hundred eighty-nine million, three hundred eighty-nine thousand, nine hundred sixteen".