258489 has 24 divisors (see below), whose sum is σ = 466752. Its totient is φ = 133920.

The previous prime is 258487. The next prime is 258491. The reversal of 258489 is 984852.

It is an interprime number because it is at equal distance from previous prime (258487) and next prime (258491).

It is not a de Polignac number, because 258489 - 2¹ = 258487 is a prime.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 258489.

It is not an unprimeable number, because it can be changed into a prime (258487) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 507 + ... + 879.

It is an arithmetic number, because the mean of its divisors is an integer number (19448).

2²⁵⁸⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

258489 is a deficient number, since it is larger than the sum of its proper divisors (208263).

258489 is a wasteful number, since it uses less digits than its factorization.

258489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 394 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 258489 is about 508.4181350031. The cubic root of 258489 is about 63.7011621343.

It can be divided in two parts, 258 and 489, that added together give a palindrome (747).

The spelling of 258489 in words is "two hundred fifty-eight thousand, four hundred eighty-nine".