258091859 has 2 divisors, whose sum is σ = 258091860. Its totient is φ = 258091858.

The previous prime is 258091853. The next prime is 258091861. The reversal of 258091859 is 958190852.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-258091859 is a prime.

It is a super-2 number, since 2×258091859² = 133222815364151762, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 258091861, 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 (258091853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129045929 + 129045930.

It is an arithmetic number, because the mean of its divisors is an integer number (129045930).

Almost surely, 2^258091859 is an apocalyptic number.

258091859 is a deficient number, since it is larger than the sum of its proper divisors (1).

258091859 is an equidigital number, since it uses as much as digits as its factorization.

258091859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 47.

The square root of 258091859 is about 16065.2375955042. The cubic root of 258091859 is about 636.6852204724.

The spelling of 258091859 in words is "two hundred fifty-eight million, ninety-one thousand, eight hundred fifty-nine".