289963 has 4 divisors (see below), whose sum is σ = 295488. Its totient is φ = 284440.

The previous prime is 289957. The next prime is 289967. The reversal of 289963 is 369982.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289967) 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, 2683 + ... + 2788.

It is an arithmetic number, because the mean of its divisors is an integer number (73872).

2²⁸⁹⁹⁶³ is an apocalyptic number.

289963 is a deficient number, since it is larger than the sum of its proper divisors (5525).

289963 is an equidigital number, since it uses as much as digits as its factorization.

289963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5524.

The product of its digits is 23328, while the sum is 37.

The square root of 289963 is about 538.4821259801. The cubic root of 289963 is about 66.1882443385.

The spelling of 289963 in words is "two hundred eighty-nine thousand, nine hundred sixty-three".