989896988 has 6 divisors (see below), whose sum is σ = 1732319736. Its totient is φ = 494948492.

The previous prime is 989896987. The next prime is 989897003. The reversal of 989896988 is 889698989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989896987) by changing a digit.

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 as a sum of consecutive naturals, namely, 123737120 + ... + 123737127.

It is an arithmetic number, because the mean of its divisors is an integer number (288719956).

Almost surely, 2^989896988 is an apocalyptic number.

It is an amenable number.

989896988 is a deficient number, since it is larger than the sum of its proper divisors (742422748).

989896988 is a wasteful number, since it uses less digits than its factorization.

989896988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247474251 (or 247474249 counting only the distinct ones).

The product of its digits is 161243136, while the sum is 74.

The square root of 989896988 is about 31462.6284343823. The cubic root of 989896988 is about 996.6209240399.

The spelling of 989896988 in words is "nine hundred eighty-nine million, eight hundred ninety-six thousand, nine hundred eighty-eight".