6429539 has 2 divisors, whose sum is σ = 6429540. Its totient is φ = 6429538.

The previous prime is 6429529. The next prime is 6429541. The reversal of 6429539 is 9359246.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6429539 is a prime.

Together with 6429541, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6429509) 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, 3214769 + 3214770.

It is an arithmetic number, because the mean of its divisors is an integer number (3214770).

Almost surely, 2^6429539 is an apocalyptic number.

6429539 is a deficient number, since it is larger than the sum of its proper divisors (1).

6429539 is an equidigital number, since it uses as much as digits as its factorization.

6429539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 38.

The square root of 6429539 is about 2535.6535646653. The cubic root of 6429539 is about 185.9487564543.

The spelling of 6429539 in words is "six million, four hundred twenty-nine thousand, five hundred thirty-nine".