989956 has 24 divisors (see below), whose sum is σ = 1915200. Its totient is φ = 444000.

The previous prime is 989951. The next prime is 989959. The reversal of 989956 is 659989.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (989951) by changing a digit.

989956 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 7 ways as a sum of consecutive naturals, for example, 6481 + ... + 6631.

It is an arithmetic number, because the mean of its divisors is an integer number (79800).

2⁹⁸⁹⁹⁵⁶ is an apocalyptic number.

It is an amenable number.

989956 is a deficient number, since it is larger than the sum of its proper divisors (925244).

989956 is a wasteful number, since it uses less digits than its factorization.

989956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315 (or 313 counting only the distinct ones).

The product of its digits is 174960, while the sum is 46.

The square root of 989956 is about 994.9653260290. The cubic root of 989956 is about 99.6640727927.

The spelling of 989956 in words is "nine hundred eighty-nine thousand, nine hundred fifty-six".