984889 has 4 divisors (see below), whose sum is σ = 990756. Its totient is φ = 979024.

The previous prime is 984881. The next prime is 984911. The reversal of 984889 is 988489.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 518400 + 466489 = 720^2 + 683^2 .

It is a cyclic number.

It is not a de Polignac number, because 984889 - 2³ = 984881 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (984881) 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, 2674 + ... + 3019.

It is an arithmetic number, because the mean of its divisors is an integer number (247689).

2⁹⁸⁴⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

984889 is a deficient number, since it is larger than the sum of its proper divisors (5867).

984889 is a wasteful number, since it uses less digits than its factorization.

984889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5866.

The product of its digits is 165888, while the sum is 46.

The square root of 984889 is about 992.4157394963. The cubic root of 984889 is about 99.4937413469.

Subtracting 984889 from its reverse (988489), we obtain a square (3600 = 60²).

The spelling of 984889 in words is "nine hundred eighty-four thousand, eight hundred eighty-nine".