258730989 has 16 divisors (see below), whose sum is σ = 382717440. Its totient is φ = 154147760.

The previous prime is 258730981. The next prime is 258731021. The reversal of 258730989 is 989037852.

It is a cyclic number.

It is not a de Polignac number, because 258730989 - 2³ = 258730981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258730981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64497 + ... + 68390.

It is an arithmetic number, because the mean of its divisors is an integer number (23919840).

Almost surely, 2^258730989 is an apocalyptic number.

It is an amenable number.

258730989 is a deficient number, since it is larger than the sum of its proper divisors (123986451).

258730989 is a wasteful number, since it uses less digits than its factorization.

258730989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132960.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The square root of 258730989 is about 16085.1170029938. The cubic root of 258730989 is about 637.2103425352.

The spelling of 258730989 in words is "two hundred fifty-eight million, seven hundred thirty thousand, nine hundred eighty-nine".