99611819 has 2 divisors, whose sum is σ = 99611820. Its totient is φ = 99611818.

The previous prime is 99611797. The next prime is 99611849. The reversal of 99611819 is 91811699.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99611819 - 2⁸ = 99611563 is a prime.

It is a super-2 number, since 2×99611819² = 19845028968977522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99611819.

It is not a weakly prime, because it can be changed into another prime (99611849) 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, 49805909 + 49805910.

It is an arithmetic number, because the mean of its divisors is an integer number (49805910).

Almost surely, 2^99611819 is an apocalyptic number.

99611819 is a deficient number, since it is larger than the sum of its proper divisors (1).

99611819 is an equidigital number, since it uses as much as digits as its factorization.

99611819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 44.

The square root of 99611819 is about 9980.5720777919. The cubic root of 99611819 is about 463.5575123544.

The spelling of 99611819 in words is "ninety-nine million, six hundred eleven thousand, eight hundred nineteen".