258878423 has 2 divisors, whose sum is σ = 258878424. Its totient is φ = 258878422.

The previous prime is 258878377. The next prime is 258878437. The reversal of 258878423 is 324878852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 258878423 - 2⁸ = 258878167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258878443) 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 as a sum of consecutive naturals, namely, 129439211 + 129439212.

It is an arithmetic number, because the mean of its divisors is an integer number (129439212).

Almost surely, 2^258878423 is an apocalyptic number.

258878423 is a deficient number, since it is larger than the sum of its proper divisors (1).

258878423 is an equidigital number, since it uses as much as digits as its factorization.

258878423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 860160, while the sum is 47.

The square root of 258878423 is about 16089.6992824602. The cubic root of 258878423 is about 637.3313544930.

The spelling of 258878423 in words is "two hundred fifty-eight million, eight hundred seventy-eight thousand, four hundred twenty-three".