258889 has 4 divisors (see below), whose sum is σ = 265924. Its totient is φ = 251856.

The previous prime is 258887. The next prime is 258917. The reversal of 258889 is 988852.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 164025 + 94864 = 405^2 + 308^2 .

It is a cyclic number.

It is not a de Polignac number, because 258889 - 2¹ = 258887 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (258887) 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, 3462 + ... + 3535.

It is an arithmetic number, because the mean of its divisors is an integer number (66481).

2²⁵⁸⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

258889 is a deficient number, since it is larger than the sum of its proper divisors (7035).

258889 is an equidigital number, since it uses as much as digits as its factorization.

258889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7034.

The product of its digits is 46080, while the sum is 40.

The square root of 258889 is about 508.8113599361. The cubic root of 258889 is about 63.7340034194.

The spelling of 258889 in words is "two hundred fifty-eight thousand, eight hundred eighty-nine".