283889 has 4 divisors (see below), whose sum is σ = 296256. Its totient is φ = 271524.

The previous prime is 283873. The next prime is 283909. The reversal of 283889 is 988382.

283889 = T₅₄ + T₅₅ + ... + T₁₂₂.

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, and also an emirpimes, since its reverse is a distinct semiprime: 988382 = 2 ⋅494191.

It is a cyclic number.

It is not a de Polignac number, because 283889 - 2⁴ = 283873 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 (283859) 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, 6149 + ... + 6194.

It is an arithmetic number, because the mean of its divisors is an integer number (74064).

2²⁸³⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

283889 is a deficient number, since it is larger than the sum of its proper divisors (12367).

283889 is a wasteful number, since it uses less digits than its factorization.

283889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12366.

The product of its digits is 27648, while the sum is 38.

The square root of 283889 is about 532.8123497067. The cubic root of 283889 is about 65.7228198026.

The spelling of 283889 in words is "two hundred eighty-three thousand, eight hundred eighty-nine".