6400469429 has 2 divisors, whose sum is σ = 6400469430. Its totient is φ = 6400469428.

The previous prime is 6400469381. The next prime is 6400469431. The reversal of 6400469429 is 9249640046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6352887025 + 47582404 = 79705^2 + 6898^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6400469429 is a prime.

It is a Sophie Germain prime.

Together with 6400469431, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6400469429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6400465429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3200234714 + 3200234715.

It is an arithmetic number, because the mean of its divisors is an integer number (3200234715).

Almost surely, 2^6400469429 is an apocalyptic number.

It is an amenable number.

6400469429 is a deficient number, since it is larger than the sum of its proper divisors (1).

6400469429 is an equidigital number, since it uses as much as digits as its factorization.

6400469429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 6400469429 is about 80002.9338774523. The cubic root of 6400469429 is about 1856.6809260104.

The spelling of 6400469429 in words is "six billion, four hundred million, four hundred sixty-nine thousand, four hundred twenty-nine".