6889480909 has 2 divisors, whose sum is σ = 6889480910. Its totient is φ = 6889480908.

The previous prime is 6889480907. The next prime is 6889480933. The reversal of 6889480909 is 9090849886.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6686332900 + 203148009 = 81770^2 + 14253^2 .

It is a cyclic number.

It is not a de Polignac number, because 6889480909 - 2¹ = 6889480907 is a prime.

Together with 6889480907, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6889480907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3444740454 + 3444740455.

It is an arithmetic number, because the mean of its divisors is an integer number (3444740455).

Almost surely, 2^6889480909 is an apocalyptic number.

It is an amenable number.

6889480909 is a deficient number, since it is larger than the sum of its proper divisors (1).

6889480909 is an equidigital number, since it uses as much as digits as its factorization.

6889480909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8957952, while the sum is 61.

The square root of 6889480909 is about 83002.8969916111. The cubic root of 6889480909 is about 1902.8103294994.

The spelling of 6889480909 in words is "six billion, eight hundred eighty-nine million, four hundred eighty thousand, nine hundred nine".