258929 has 4 divisors (see below), whose sum is σ = 282480. Its totient is φ = 235380.

The previous prime is 258919. The next prime is 258949. The reversal of 258929 is 929852.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 258929 - 2⁸ = 258673 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 258929.

It is not an unprimeable number, because it can be changed into a prime (258919) 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, 11759 + ... + 11780.

It is an arithmetic number, because the mean of its divisors is an integer number (70620).

2²⁵⁸⁹²⁹ is an apocalyptic number.

It is an amenable number.

258929 is a deficient number, since it is larger than the sum of its proper divisors (23551).

258929 is a wasteful number, since it uses less digits than its factorization.

258929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23550.

The product of its digits is 12960, while the sum is 35.

The square root of 258929 is about 508.8506657164. The cubic root of 258929 is about 63.7372856869.

The spelling of 258929 in words is "two hundred fifty-eight thousand, nine hundred twenty-nine".