282989 has 4 divisors (see below), whose sum is σ = 323424. Its totient is φ = 242556.

The previous prime is 282977. The next prime is 282991. The reversal of 282989 is 989282.

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 282989 - 2⁴ = 282973 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (282959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20207 + ... + 20220.

It is an arithmetic number, because the mean of its divisors is an integer number (80856).

2²⁸²⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

282989 is a deficient number, since it is larger than the sum of its proper divisors (40435).

282989 is an equidigital number, since it uses as much as digits as its factorization.

282989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40434.

The product of its digits is 20736, while the sum is 38.

The square root of 282989 is about 531.9671042461. The cubic root of 282989 is about 65.6532936198.

The spelling of 282989 in words is "two hundred eighty-two thousand, nine hundred eighty-nine".