99855853 has 2 divisors, whose sum is σ = 99855854. Its totient is φ = 99855852.

The previous prime is 99855851. The next prime is 99855883. The reversal of 99855853 is 35855899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65901924 + 33953929 = 8118^2 + 5827^2 .

It is an emirp because it is prime and its reverse (35855899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99855853 - 2¹ = 99855851 is a prime.

Together with 99855851, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 99855853.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99855851) 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, 49927926 + 49927927.

It is an arithmetic number, because the mean of its divisors is an integer number (49927927).

Almost surely, 2^99855853 is an apocalyptic number.

It is an amenable number.

99855853 is a deficient number, since it is larger than the sum of its proper divisors (1).

99855853 is an equidigital number, since it uses as much as digits as its factorization.

99855853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944000, while the sum is 52.

The square root of 99855853 is about 9992.7900508316. The cubic root of 99855853 is about 463.9357524129.

The spelling of 99855853 in words is "ninety-nine million, eight hundred fifty-five thousand, eight hundred fifty-three".