6888406849 has 2 divisors, whose sum is σ = 6888406850. Its totient is φ = 6888406848.

The previous prime is 6888406771. The next prime is 6888406909. The reversal of 6888406849 is 9486048886.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4902100225 + 1986306624 = 70015^2 + 44568^2 .

It is a cyclic number.

It is not a de Polignac number, because 6888406849 - 2¹⁵ = 6888374081 is a prime.

It is not a weakly prime, because it can be changed into another prime (6888406649) 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 as a sum of consecutive naturals, namely, 3444203424 + 3444203425.

It is an arithmetic number, because the mean of its divisors is an integer number (3444203425).

Almost surely, 2^6888406849 is an apocalyptic number.

It is an amenable number.

6888406849 is a deficient number, since it is larger than the sum of its proper divisors (1).

6888406849 is an equidigital number, since it uses as much as digits as its factorization.

6888406849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21233664, while the sum is 61.

The square root of 6888406849 is about 82996.4267242874. The cubic root of 6888406849 is about 1902.7114425777.

The spelling of 6888406849 in words is "six billion, eight hundred eighty-eight million, four hundred six thousand, eight hundred forty-nine".