258746879 has 4 divisors (see below), whose sum is σ = 260784384. Its totient is φ = 256709376.

The previous prime is 258746869. The next prime is 258746881. The reversal of 258746879 is 978647852.

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

It is a cyclic number.

It is not a de Polignac number, because 258746879 - 2⁸ = 258746623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258746819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1018562 + ... + 1018815.

It is an arithmetic number, because the mean of its divisors is an integer number (65196096).

Almost surely, 2^258746879 is an apocalyptic number.

258746879 is a deficient number, since it is larger than the sum of its proper divisors (2037505).

258746879 is a wasteful number, since it uses less digits than its factorization.

258746879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2037504.

The product of its digits is 6773760, while the sum is 56.

The square root of 258746879 is about 16085.6109302693. The cubic root of 258746879 is about 637.2233870557.

The spelling of 258746879 in words is "two hundred fifty-eight million, seven hundred forty-six thousand, eight hundred seventy-nine".