259929 has 10 divisors (see below), whose sum is σ = 388410. Its totient is φ = 173232.

The previous prime is 259907. The next prime is 259933. The reversal of 259929 is 929952.

It can be written as a sum of positive squares in only one way, i.e., 227529 + 32400 = 477^2 + 180^2 .

It is not a de Polignac number, because 259929 - 2⁷ = 259801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 259893 and 259902.

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 9 ways as a sum of consecutive naturals, for example, 1524 + ... + 1685.

It is an arithmetic number, because the mean of its divisors is an integer number (38841).

2²⁵⁹⁹²⁹ is an apocalyptic number.

It is an amenable number.

259929 is a deficient number, since it is larger than the sum of its proper divisors (128481).

259929 is an equidigital number, since it uses as much as digits as its factorization.

259929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221 (or 3212 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 259929 is about 509.8323253777. The cubic root of 259929 is about 63.8192327442.

It can be divided in two parts, 2599 and 29, that added together give a triangular number (2628 = T₇₂).

The spelling of 259929 in words is "two hundred fifty-nine thousand, nine hundred twenty-nine".