258989 has 8 divisors (see below), whose sum is σ = 279840. Its totient is φ = 238896.

The previous prime is 258983. The next prime is 258991. The reversal of 258989 is 989852.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 258989 - 2⁸ = 258733 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 258989.

It is not an unprimeable number, because it can be changed into a prime (258983) 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 7 ways as a sum of consecutive naturals, for example, 659 + ... + 975.

It is an arithmetic number, because the mean of its divisors is an integer number (34980).

2²⁵⁸⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

258989 is a deficient number, since it is larger than the sum of its proper divisors (20851).

258989 is a wasteful number, since it uses less digits than its factorization.

258989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379.

The product of its digits is 51840, while the sum is 41.

The square root of 258989 is about 508.9096186947. The cubic root of 258989 is about 63.7422084544.

The spelling of 258989 in words is "two hundred fifty-eight thousand, nine hundred eighty-nine".