258233849 has 2 divisors, whose sum is σ = 258233850. Its totient is φ = 258233848.

The previous prime is 258233831. The next prime is 258233851. The reversal of 258233849 is 948332852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257923600 + 310249 = 16060^2 + 557^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258233849 is a prime.

Together with 258233851, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (258233809) 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, 129116924 + 129116925.

It is an arithmetic number, because the mean of its divisors is an integer number (129116925).

Almost surely, 2^258233849 is an apocalyptic number.

It is an amenable number.

258233849 is a deficient number, since it is larger than the sum of its proper divisors (1).

258233849 is an equidigital number, since it uses as much as digits as its factorization.

258233849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 44.

The square root of 258233849 is about 16069.6561568691. The cubic root of 258233849 is about 636.8019571534.

The spelling of 258233849 in words is "two hundred fifty-eight million, two hundred thirty-three thousand, eight hundred forty-nine".