6789559499 has 2 divisors, whose sum is σ = 6789559500. Its totient is φ = 6789559498.

The previous prime is 6789559471. The next prime is 6789559549. The reversal of 6789559499 is 9949559876.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6789559499 is a prime.

It is a super-2 number, since 2×6789559499² = 92196236380922262002, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (6789549499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3394779749 + 3394779750.

It is an arithmetic number, because the mean of its divisors is an integer number (3394779750).

Almost surely, 2^6789559499 is an apocalyptic number.

6789559499 is a deficient number, since it is larger than the sum of its proper divisors (1).

6789559499 is an equidigital number, since it uses as much as digits as its factorization.

6789559499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 220449600, while the sum is 71.

The square root of 6789559499 is about 82398.7833587366. The cubic root of 6789559499 is about 1893.5663742863.

The spelling of 6789559499 in words is "six billion, seven hundred eighty-nine million, five hundred fifty-nine thousand, four hundred ninety-nine".