259843 has 4 divisors (see below), whose sum is σ = 261360. Its totient is φ = 258328.

The previous prime is 259841. The next prime is 259867. The reversal of 259843 is 348952.

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

It is a cyclic number.

It is not a de Polignac number, because 259843 - 2¹ = 259841 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (259841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463 + ... + 856.

It is an arithmetic number, because the mean of its divisors is an integer number (65340).

259843 is a Friedman number, since it can be written as 3+(4^5-9)*2^8, using all its digits and the basic arithmetic operations.

2²⁵⁹⁸⁴³ is an apocalyptic number.

259843 is a deficient number, since it is larger than the sum of its proper divisors (1517).

259843 is a wasteful number, since it uses less digits than its factorization.

259843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516.

The product of its digits is 8640, while the sum is 31.

The square root of 259843 is about 509.7479769455. The cubic root of 259843 is about 63.8121935663.

The spelling of 259843 in words is "two hundred fifty-nine thousand, eight hundred forty-three".