6435429139 has 2 divisors, whose sum is σ = 6435429140. Its totient is φ = 6435429138.

The previous prime is 6435429113. The next prime is 6435429151. The reversal of 6435429139 is 9319245346.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6435429139 - 2⁵ = 6435429107 is a prime.

It is not a weakly prime, because it can be changed into another prime (6435409139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3217714569 + 3217714570.

It is an arithmetic number, because the mean of its divisors is an integer number (3217714570).

Almost surely, 2^6435429139 is an apocalyptic number.

6435429139 is a deficient number, since it is larger than the sum of its proper divisors (1).

6435429139 is an equidigital number, since it uses as much as digits as its factorization.

6435429139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 46.

The square root of 6435429139 is about 80221.1265129081. The cubic root of 6435429139 is about 1860.0552204479.

The spelling of 6435429139 in words is "six billion, four hundred thirty-five million, four hundred twenty-nine thousand, one hundred thirty-nine".