258086989 has 8 divisors (see below), whose sum is σ = 264901472. Its totient is φ = 251309520.

The previous prime is 258086981. The next prime is 258087007. The reversal of 258086989 is 989680852.

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 258086989 - 2³ = 258086981 is a prime.

It is a super-2 number, since 2×258086989² = 133217787782172242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258086981) 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, 5167 + ... + 23299.

It is an arithmetic number, because the mean of its divisors is an integer number (33112684).

Almost surely, 2^258086989 is an apocalyptic number.

It is an amenable number.

258086989 is a deficient number, since it is larger than the sum of its proper divisors (6814483).

258086989 is a wasteful number, since it uses less digits than its factorization.

258086989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18507.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The square root of 258086989 is about 16065.0860252910. The cubic root of 258086989 is about 636.6812158562.

The spelling of 258086989 in words is "two hundred fifty-eight million, eighty-six thousand, nine hundred eighty-nine".