989968 has 20 divisors (see below), whose sum is σ = 2192320. Its totient is φ = 424224.

The previous prime is 989959. The next prime is 989971. The reversal of 989968 is 869989.

It is an unprimeable number.

989968 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4308 + ... + 4531.

It is an arithmetic number, because the mean of its divisors is an integer number (109616).

2⁹⁸⁹⁹⁶⁸ is an apocalyptic number.

It is an amenable number.

989968 is an abundant number, since it is smaller than the sum of its proper divisors (1202352).

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

989968 is a wasteful number, since it uses less digits than its factorization.

989968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8854 (or 8848 counting only the distinct ones).

The product of its digits is 279936, while the sum is 49.

The square root of 989968 is about 994.9713563716. The cubic root of 989968 is about 99.6644754921.

The spelling of 989968 in words is "nine hundred eighty-nine thousand, nine hundred sixty-eight".