99888888919 has 2 divisors, whose sum is σ = 99888888920. Its totient is φ = 99888888918.

The previous prime is 99888888899. The next prime is 99888888929. The reversal of 99888888919 is 91988888899.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (91988888899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99888888919 - 2³¹ = 97741405271 is a prime.

It is a super-2 number, since 2×99888888919² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99888888929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49944444459 + 49944444460.

It is an arithmetic number, because the mean of its divisors is an integer number (49944444460).

Almost surely, 2^99888888919 is an apocalyptic number.

99888888919 is a deficient number, since it is larger than the sum of its proper divisors (1).

99888888919 is an equidigital number, since it uses as much as digits as its factorization.

99888888919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1719926784, while the sum is 85.

The spelling of 99888888919 in words is "ninety-nine billion, eight hundred eighty-eight million, eight hundred eighty-eight thousand, nine hundred nineteen".