259823 has 2 divisors, whose sum is σ = 259824. Its totient is φ = 259822.

The previous prime is 259813. The next prime is 259829. The reversal of 259823 is 328952.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-259823 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129911 + 129912.

It is an arithmetic number, because the mean of its divisors is an integer number (129912).

2²⁵⁹⁸²³ is an apocalyptic number.

259823 is a deficient number, since it is larger than the sum of its proper divisors (1).

259823 is an equidigital number, since it uses as much as digits as its factorization.

259823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 259823 is about 509.7283590306. The cubic root of 259823 is about 63.8105563256.

The spelling of 259823 in words is "two hundred fifty-nine thousand, eight hundred twenty-three".