259443 has 10 divisors (see below), whose sum is σ = 387684. Its totient is φ = 172908.

The previous prime is 259429. The next prime is 259451. The reversal of 259443 is 344952.

It is not a de Polignac number, because 259443 - 2⁵ = 259411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 2 + 5⁷ + 4³ + 9 + 4⁶ + 3¹¹ .

It is not an unprimeable number, because it can be changed into a prime (259453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1521 + ... + 1682.

2²⁵⁹⁴⁴³ is an apocalyptic number.

259443 is a deficient number, since it is larger than the sum of its proper divisors (128241).

259443 is an equidigital number, since it uses as much as digits as its factorization.

259443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3215 (or 3206 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 259443 is about 509.3554750859. The cubic root of 259443 is about 63.7794327759.

The spelling of 259443 in words is "two hundred fifty-nine thousand, four hundred forty-three".