989243 has 4 divisors (see below), whose sum is σ = 1003248. Its totient is φ = 975240.

The previous prime is 989239. The next prime is 989249. The reversal of 989243 is 342989.

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

It is a cyclic number.

It is not a de Polignac number, because 989243 - 2² = 989239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989249) 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, 6896 + ... + 7037.

It is an arithmetic number, because the mean of its divisors is an integer number (250812).

2⁹⁸⁹²⁴³ is an apocalyptic number.

989243 is a deficient number, since it is larger than the sum of its proper divisors (14005).

989243 is a wasteful number, since it uses less digits than its factorization.

989243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14004.

The product of its digits is 15552, while the sum is 35.

The square root of 989243 is about 994.6069575465. The cubic root of 989243 is about 99.6401398938.

The spelling of 989243 in words is "nine hundred eighty-nine thousand, two hundred forty-three".