99858959 has 2 divisors, whose sum is σ = 99858960. Its totient is φ = 99858958.

The previous prime is 99858949. The next prime is 99858961. The reversal of 99858959 is 95985899.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99858959 is a prime.

It is a Sophie Germain prime.

Together with 99858961, 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 (99858949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49929479 + 49929480.

It is an arithmetic number, because the mean of its divisors is an integer number (49929480).

Almost surely, 2^99858959 is an apocalyptic number.

99858959 is a deficient number, since it is larger than the sum of its proper divisors (1).

99858959 is an equidigital number, since it uses as much as digits as its factorization.

99858959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10497600, while the sum is 62.

The square root of 99858959 is about 9992.9454616745. The cubic root of 99858959 is about 463.9405625783.

The spelling of 99858959 in words is "ninety-nine million, eight hundred fifty-eight thousand, nine hundred fifty-nine".