258716089 has 4 divisors (see below), whose sum is σ = 258787620. Its totient is φ = 258644560.

The previous prime is 258716077. The next prime is 258716093. The reversal of 258716089 is 980617852.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 106440489 + 152275600 = 10317^2 + 12340^2 .

It is a cyclic number.

It is not a de Polignac number, because 258716089 - 2⁵ = 258716057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258716009) 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, 30034 + ... + 37675.

It is an arithmetic number, because the mean of its divisors is an integer number (64696905).

Almost surely, 2^258716089 is an apocalyptic number.

It is an amenable number.

258716089 is a deficient number, since it is larger than the sum of its proper divisors (71531).

258716089 is an equidigital number, since it uses as much as digits as its factorization.

258716089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71530.

The product of its (nonzero) digits is 241920, while the sum is 46.

The square root of 258716089 is about 16084.6538352555. The cubic root of 258716089 is about 637.1981102466.

The spelling of 258716089 in words is "two hundred fifty-eight million, seven hundred sixteen thousand, eighty-nine".