6431429 has 2 divisors, whose sum is σ = 6431430. Its totient is φ = 6431428.

The previous prime is 6431401. The next prime is 6431431. The reversal of 6431429 is 9241346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4831204 + 1600225 = 2198^2 + 1265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6431429 is a prime.

Together with 6431431, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6430429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3215714 + 3215715.

It is an arithmetic number, because the mean of its divisors is an integer number (3215715).

Almost surely, 2^6431429 is an apocalyptic number.

It is an amenable number.

6431429 is a deficient number, since it is larger than the sum of its proper divisors (1).

6431429 is an equidigital number, since it uses as much as digits as its factorization.

6431429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 29.

The square root of 6431429 is about 2536.0262222619. The cubic root of 6431429 is about 185.9669749051.

The spelling of 6431429 in words is "six million, four hundred thirty-one thousand, four hundred twenty-nine".