6888899929 has 2 divisors, whose sum is σ = 6888899930. Its totient is φ = 6888899928.

The previous prime is 6888899921. The next prime is 6888899951. The reversal of 6888899929 is 9299988886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6810045529 + 78854400 = 82523^2 + 8880^2 .

It is a cyclic number.

It is not a de Polignac number, because 6888899929 - 2³ = 6888899921 is a prime.

It is not a weakly prime, because it can be changed into another prime (6888899921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3444449964 + 3444449965.

It is an arithmetic number, because the mean of its divisors is an integer number (3444449965).

Almost surely, 2^6888899929 is an apocalyptic number.

It is an amenable number.

6888899929 is a deficient number, since it is larger than the sum of its proper divisors (1).

6888899929 is an equidigital number, since it uses as much as digits as its factorization.

6888899929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322486272, while the sum is 76.

The square root of 6888899929 is about 82999.3971604614. The cubic root of 6888899929 is about 1902.7568409112.

The spelling of 6888899929 in words is "six billion, eight hundred eighty-eight million, eight hundred ninety-nine thousand, nine hundred twenty-nine".