958666859 has 2 divisors, whose sum is σ = 958666860. Its totient is φ = 958666858.

The previous prime is 958666843. The next prime is 958666861.

958666859 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 958666859 - 2⁴ = 958666843 is a prime.

It is a super-3 number, since 3×958666859³ (a number of 28 digits) contains 333 as substring.

Together with 958666861, 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 (958666759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 479333429 + 479333430.

It is an arithmetic number, because the mean of its divisors is an integer number (479333430).

Almost surely, 2^958666859 is an apocalyptic number.

958666859 is a deficient number, since it is larger than the sum of its proper divisors (1).

958666859 is an equidigital number, since it uses as much as digits as its factorization.

958666859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27993600, while the sum is 62.

The square root of 958666859 is about 30962.3458252116. The cubic root of 958666859 is about 986.0279781322.

The spelling of 958666859 in words is "nine hundred fifty-eight million, six hundred sixty-six thousand, eight hundred fifty-nine".