989924 has 12 divisors (see below), whose sum is σ = 1865724. Its totient is φ = 456864.

The previous prime is 989921. The next prime is 989929. The reversal of 989924 is 429989.

It can be written as a sum of positive squares in 2 ways, for example, as 52900 + 937024 = 230^2 + 968^2 .

It is not an unprimeable number, because it can be changed into a prime (989921) 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 in 3 ways as a sum of consecutive naturals, for example, 9467 + ... + 9570.

It is an arithmetic number, because the mean of its divisors is an integer number (155477).

2⁹⁸⁹⁹²⁴ is an apocalyptic number.

It is an amenable number.

989924 is a deficient number, since it is larger than the sum of its proper divisors (875800).

989924 is a wasteful number, since it uses less digits than its factorization.

989924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19054 (or 19052 counting only the distinct ones).

The product of its digits is 46656, while the sum is 41.

The square root of 989924 is about 994.9492449366. The cubic root of 989924 is about 99.6629989118.

The spelling of 989924 in words is "nine hundred eighty-nine thousand, nine hundred twenty-four".