258943 has 4 divisors (see below), whose sum is σ = 267328. Its totient is φ = 250560.

The previous prime is 258919. The next prime is 258949. The reversal of 258943 is 349852.

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 258943 - 2¹³ = 250751 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 8353 = 258943 / (2 + 5 + 8 + 9 + 4 + 3).

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258949) 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, 4146 + ... + 4207.

It is an arithmetic number, because the mean of its divisors is an integer number (66832).

2²⁵⁸⁹⁴³ is an apocalyptic number.

258943 is a deficient number, since it is larger than the sum of its proper divisors (8385).

258943 is an equidigital number, since it uses as much as digits as its factorization.

258943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8384.

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

The square root of 258943 is about 508.8644220222. The cubic root of 258943 is about 63.7384344007.

Subtracting 258943 from its reverse (349852), we obtain a palindrome (90909).

The spelling of 258943 in words is "two hundred fifty-eight thousand, nine hundred forty-three".