260439 has 4 divisors (see below), whose sum is σ = 347256. Its totient is φ = 173624.

The previous prime is 260419. The next prime is 260441. The reversal of 260439 is 934062.

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 260439 - 2¹⁵ = 227671 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260419) 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 3 ways as a sum of consecutive naturals, for example, 43404 + ... + 43409.

It is an arithmetic number, because the mean of its divisors is an integer number (86814).

2²⁶⁰⁴³⁹ is an apocalyptic number.

260439 is a deficient number, since it is larger than the sum of its proper divisors (86817).

260439 is an equidigital number, since it uses as much as digits as its factorization.

260439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86816.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 260439 is about 510.3322447191. The cubic root of 260439 is about 63.8609448333.

The spelling of 260439 in words is "two hundred sixty thousand, four hundred thirty-nine".