6921120469 has 2 divisors, whose sum is σ = 6921120470. Its totient is φ = 6921120468.

The previous prime is 6921120467. The next prime is 6921120473. The reversal of 6921120469 is 9640211296.

6921120469 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6340936900 + 580183569 = 79630^2 + 24087^2 .

It is a cyclic number.

It is not a de Polignac number, because 6921120469 - 2¹ = 6921120467 is a prime.

It is a super-2 number, since 2×6921120469² = 95803817092821559922, which contains 22 as substring.

Together with 6921120467, 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 (6921120467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3460560234 + 3460560235.

It is an arithmetic number, because the mean of its divisors is an integer number (3460560235).

Almost surely, 2^6921120469 is an apocalyptic number.

It is an amenable number.

6921120469 is a deficient number, since it is larger than the sum of its proper divisors (1).

6921120469 is an equidigital number, since it uses as much as digits as its factorization.

6921120469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 6921120469 is about 83193.2717772297. The cubic root of 6921120469 is about 1905.7187322028.

The spelling of 6921120469 in words is "six billion, nine hundred twenty-one million, one hundred twenty thousand, four hundred sixty-nine".