98559191 has 2 divisors, whose sum is σ = 98559192. Its totient is φ = 98559190.

The previous prime is 98559151. The next prime is 98559193. The reversal of 98559191 is 19195589.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 98559191 - 2⁶ = 98559127 is a prime.

Together with 98559193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98559193) 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, 49279595 + 49279596.

It is an arithmetic number, because the mean of its divisors is an integer number (49279596).

Almost surely, 2^98559191 is an apocalyptic number.

98559191 is a deficient number, since it is larger than the sum of its proper divisors (1).

98559191 is an equidigital number, since it uses as much as digits as its factorization.

98559191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 47.

The square root of 98559191 is about 9927.6981722855. The cubic root of 98559191 is about 461.9188762692.

The spelling of 98559191 in words is "ninety-eight million, five hundred fifty-nine thousand, one hundred ninety-one".