259489 has 4 divisors (see below), whose sum is σ = 265860. Its totient is φ = 253120.

The previous prime is 259459. The next prime is 259499. The reversal of 259489 is 984952.

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 93025 + 166464 = 305^2 + 408^2 .

It is a cyclic number.

It is not a de Polignac number, because 259489 - 2⁹ = 258977 is a prime.

It is a super-2 number, since 2×259489² = 134669082242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259429) 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, 3124 + ... + 3205.

It is an arithmetic number, because the mean of its divisors is an integer number (66465).

2²⁵⁹⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

259489 is a deficient number, since it is larger than the sum of its proper divisors (6371).

259489 is an equidigital number, since it uses as much as digits as its factorization.

259489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6370.

The product of its digits is 25920, while the sum is 37.

The square root of 259489 is about 509.4006281896. The cubic root of 259489 is about 63.7832019795.

The spelling of 259489 in words is "two hundred fifty-nine thousand, four hundred eighty-nine".