258349279 has 2 divisors, whose sum is σ = 258349280. Its totient is φ = 258349278.

The previous prime is 258349243. The next prime is 258349297. The reversal of 258349279 is 972943852.

Together with next prime (258349297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 258349279 - 2⁷ = 258349151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258349219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129174639 + 129174640.

It is an arithmetic number, because the mean of its divisors is an integer number (129174640).

Almost surely, 2^258349279 is an apocalyptic number.

258349279 is a deficient number, since it is larger than the sum of its proper divisors (1).

258349279 is an equidigital number, since it uses as much as digits as its factorization.

258349279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 49.

The square root of 258349279 is about 16073.2473072494. The cubic root of 258349279 is about 636.8968260749.

The spelling of 258349279 in words is "two hundred fifty-eight million, three hundred forty-nine thousand, two hundred seventy-nine".