99854819 has 2 divisors, whose sum is σ = 99854820. Its totient is φ = 99854818.

The previous prime is 99854789. The next prime is 99854827. The reversal of 99854819 is 91845899.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99854819 is a prime.

It is a super-2 number, since 2×99854819² = 19941969755045522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99854869) 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, 49927409 + 49927410.

It is an arithmetic number, because the mean of its divisors is an integer number (49927410).

Almost surely, 2^99854819 is an apocalyptic number.

99854819 is a deficient number, since it is larger than the sum of its proper divisors (1).

99854819 is an equidigital number, since it uses as much as digits as its factorization.

99854819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 53.

The square root of 99854819 is about 9992.7383133954. The cubic root of 99854819 is about 463.9341510672.

The spelling of 99854819 in words is "ninety-nine million, eight hundred fifty-four thousand, eight hundred nineteen".