6729109 has 2 divisors, whose sum is σ = 6729110. Its totient is φ = 6729108.

The previous prime is 6729089. The next prime is 6729137. The reversal of 6729109 is 9019276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4088484 + 2640625 = 2022^2 + 1625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6729109 is a prime.

It is equal to p₄₅₉₃₇₆ and since 6729109 and 459376 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6729169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3364554 + 3364555.

It is an arithmetic number, because the mean of its divisors is an integer number (3364555).

Almost surely, 2^6729109 is an apocalyptic number.

It is an amenable number.

6729109 is a deficient number, since it is larger than the sum of its proper divisors (1).

6729109 is an equidigital number, since it uses as much as digits as its factorization.

6729109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 6729109 is about 2594.0526209004. The cubic root of 6729109 is about 188.7929855463.

The spelling of 6729109 in words is "six million, seven hundred twenty-nine thousand, one hundred nine".