6429109 has 2 divisors, whose sum is σ = 6429110. Its totient is φ = 6429108.

The previous prime is 6429107. The next prime is 6429139. The reversal of 6429109 is 9019246.

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., 5267025 + 1162084 = 2295^2 + 1078^2 .

It is a cyclic number.

It is not a de Polignac number, because 6429109 - 2¹ = 6429107 is a prime.

Together with 6429107, 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 (6429103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3214554 + 3214555.

It is an arithmetic number, because the mean of its divisors is an integer number (3214555).

Almost surely, 2^6429109 is an apocalyptic number.

It is an amenable number.

6429109 is a deficient number, since it is larger than the sum of its proper divisors (1).

6429109 is an equidigital number, since it uses as much as digits as its factorization.

6429109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 6429109 is about 2535.5687724848. The cubic root of 6429109 is about 185.9446110173.

The spelling of 6429109 in words is "six million, four hundred twenty-nine thousand, one hundred nine".