260839 has 4 divisors (see below), whose sum is σ = 265320. Its totient is φ = 256360.

The previous prime is 260809. The next prime is 260849. The reversal of 260839 is 938062.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 938062 = 2 ⋅469031.

It is a cyclic number.

It is not a de Polignac number, because 260839 - 2⁵ = 260807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2152 + ... + 2269.

It is an arithmetic number, because the mean of its divisors is an integer number (66330).

2²⁶⁰⁸³⁹ is an apocalyptic number.

260839 is a deficient number, since it is larger than the sum of its proper divisors (4481).

260839 is an equidigital number, since it uses as much as digits as its factorization.

260839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4480.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 260839 is about 510.7239959117. The cubic root of 260839 is about 63.8936221096.

The spelling of 260839 in words is "two hundred sixty thousand, eight hundred thirty-nine".