8819999 has 2 divisors, whose sum is σ = 8820000. Its totient is φ = 8819998.

The previous prime is 8819977. The next prime is 8820001. The reversal of 8819999 is 9999188.

8819999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8819999 is a prime.

Together with 8820001, it forms a pair of twin primes.

It is a Chen prime.

8819999 is a modest number, since divided by 9999 gives 881 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 8819999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8819959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4409999 + 4410000.

It is an arithmetic number, because the mean of its divisors is an integer number (4410000).

Almost surely, 2^8819999 is an apocalyptic number.

8819999 is a deficient number, since it is larger than the sum of its proper divisors (1).

8819999 is an equidigital number, since it uses as much as digits as its factorization.

8819999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 53.

The square root of 8819999 is about 2969.8483126247. The cubic root of 8819999 is about 206.6123030208.

The spelling of 8819999 in words is "eight million, eight hundred nineteen thousand, nine hundred ninety-nine".