6538429 has 2 divisors, whose sum is σ = 6538430. Its totient is φ = 6538428.

The previous prime is 6538423. The next prime is 6538447. The reversal of 6538429 is 9248356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6528025 + 10404 = 2555^2 + 102^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6538429 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6538423) 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, 3269214 + 3269215.

It is an arithmetic number, because the mean of its divisors is an integer number (3269215).

Almost surely, 2^6538429 is an apocalyptic number.

It is an amenable number.

6538429 is a deficient number, since it is larger than the sum of its proper divisors (1).

6538429 is an equidigital number, since it uses as much as digits as its factorization.

6538429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 6538429 is about 2557.0351972548. The cubic root of 6538429 is about 186.9926217455.

The spelling of 6538429 in words is "six million, five hundred thirty-eight thousand, four hundred twenty-nine".