99988219 has 2 divisors, whose sum is σ = 99988220. Its totient is φ = 99988218.

The previous prime is 99988139. The next prime is 99988247. The reversal of 99988219 is 91288999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99988219 - 2⁹ = 99987707 is a prime.

It is a super-2 number, since 2×99988219² = 19995287877583922, 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 99988219.

It is not a weakly prime, because it can be changed into another prime (99988289) 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, 49994109 + 49994110.

It is an arithmetic number, because the mean of its divisors is an integer number (49994110).

Almost surely, 2^99988219 is an apocalyptic number.

99988219 is a deficient number, since it is larger than the sum of its proper divisors (1).

99988219 is an equidigital number, since it uses as much as digits as its factorization.

99988219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 55.

The square root of 99988219 is about 9999.4109326500. The cubic root of 99988219 is about 464.1406551261.

The spelling of 99988219 in words is "ninety-nine million, nine hundred eighty-eight thousand, two hundred nineteen".