258080869 has 2 divisors, whose sum is σ = 258080870. Its totient is φ = 258080868.

The previous prime is 258080863. The next prime is 258080887. The reversal of 258080869 is 968080852.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 257987844 + 93025 = 16062^2 + 305^2 .

It is a cyclic number.

It is not a de Polignac number, because 258080869 - 2⁷ = 258080741 is a prime.

It is a super-2 number, since 2×258080869² = 133211469887590322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258080863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129040434 + 129040435.

It is an arithmetic number, because the mean of its divisors is an integer number (129040435).

Almost surely, 2^258080869 is an apocalyptic number.

It is an amenable number.

258080869 is a deficient number, since it is larger than the sum of its proper divisors (1).

258080869 is an equidigital number, since it uses as much as digits as its factorization.

258080869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 46.

The square root of 258080869 is about 16064.8955489913. The cubic root of 258080869 is about 636.6761832896.

The spelling of 258080869 in words is "two hundred fifty-eight million, eighty thousand, eight hundred sixty-nine".