289263 has 8 divisors (see below), whose sum is σ = 415408. Its totient is φ = 177984.

The previous prime is 289253. The next prime is 289273. The reversal of 289263 is 362982.

It is an interprime number because it is at equal distance from previous prime (289253) and next prime (289273).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 289263 - 2⁹ = 288751 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 289263.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 289263.

It is not an unprimeable number, because it can be changed into a prime (289213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3670 + ... + 3747.

It is an arithmetic number, because the mean of its divisors is an integer number (51926).

2²⁸⁹²⁶³ is an apocalyptic number.

289263 is a deficient number, since it is larger than the sum of its proper divisors (126145).

289263 is a wasteful number, since it uses less digits than its factorization.

289263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7433.

The product of its digits is 5184, while the sum is 30.

The square root of 289263 is about 537.8317580805. The cubic root of 289263 is about 66.1349397165.

The spelling of 289263 in words is "two hundred eighty-nine thousand, two hundred sixty-three".