259979 has 4 divisors (see below), whose sum is σ = 261000. Its totient is φ = 258960.

The previous prime is 259967. The next prime is 259991. The reversal of 259979 is 979952.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (259967) and next prime (259991).

It is a cyclic number.

It is not a de Polignac number, because 259979 - 2⁸ = 259723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (259949) 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, 239 + ... + 759.

It is an arithmetic number, because the mean of its divisors is an integer number (65250).

2²⁵⁹⁹⁷⁹ is an apocalyptic number.

259979 is a deficient number, since it is larger than the sum of its proper divisors (1021).

259979 is an equidigital number, since it uses as much as digits as its factorization.

259979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020.

The product of its digits is 51030, while the sum is 41.

The square root of 259979 is about 509.8813587493. The cubic root of 259979 is about 63.8233245758.

The spelling of 259979 in words is "two hundred fifty-nine thousand, nine hundred seventy-nine".