82489 has 4 divisors (see below), whose sum is σ = 90000. Its totient is φ = 74980.

The previous prime is 82487. The next prime is 82493. The reversal of 82489 is 98428.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82489 - 2¹ = 82487 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82489.

It is not an unprimeable number, because it can be changed into a prime (82483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3739 + ... + 3760.

It is an arithmetic number, because the mean of its divisors is an integer number (22500).

2⁸²⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

82489 is a deficient number, since it is larger than the sum of its proper divisors (7511).

82489 is a wasteful number, since it uses less digits than its factorization.

82489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7510.

The product of its digits is 4608, while the sum is 31.

The square root of 82489 is about 287.2089831464. The cubic root of 82489 is about 43.5310035726.

The spelling of 82489 in words is "eighty-two thousand, four hundred eighty-nine".