259406 has 12 divisors (see below), whose sum is σ = 452808. Its totient is φ = 111132.

The previous prime is 259397. The next prime is 259411. The reversal of 259406 is 604952.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

259406 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1226 + ... + 1421.

It is an arithmetic number, because the mean of its divisors is an integer number (37734).

2²⁵⁹⁴⁰⁶ is an apocalyptic number.

259406 is a deficient number, since it is larger than the sum of its proper divisors (193402).

259406 is a wasteful number, since it uses less digits than its factorization.

259406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2663 (or 2656 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 259406 is about 509.3191533803. The cubic root of 259406 is about 63.7764007018.

The spelling of 259406 in words is "two hundred fifty-nine thousand, four hundred six".