6888899899 has 4 divisors (see below), whose sum is σ = 7873028464. Its totient is φ = 5904771336.

The previous prime is 6888899893. The next prime is 6888899903. The reversal of 6888899899 is 9989988886.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6888899899 - 2³ = 6888899891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6888899891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492064272 + ... + 492064285.

It is an arithmetic number, because the mean of its divisors is an integer number (1968257116).

Almost surely, 2^6888899899 is an apocalyptic number.

6888899899 is a deficient number, since it is larger than the sum of its proper divisors (984128565).

6888899899 is an equidigital number, since it uses as much as digits as its factorization.

6888899899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984128564.

The product of its digits is 1289945088, while the sum is 82.

The square root of 6888899899 is about 82999.3969797371. The cubic root of 6888899899 is about 1902.7568381491.

The spelling of 6888899899 in words is "six billion, eight hundred eighty-eight million, eight hundred ninety-nine thousand, eight hundred ninety-nine".