6430397399 has 2 divisors, whose sum is σ = 6430397400. Its totient is φ = 6430397398.

The previous prime is 6430397381. The next prime is 6430397419. The reversal of 6430397399 is 9937930346.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6430397399 - 2¹⁶ = 6430331863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6430397399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6430397329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3215198699 + 3215198700.

It is an arithmetic number, because the mean of its divisors is an integer number (3215198700).

Almost surely, 2^6430397399 is an apocalyptic number.

6430397399 is a deficient number, since it is larger than the sum of its proper divisors (1).

6430397399 is an equidigital number, since it uses as much as digits as its factorization.

6430397399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3306744, while the sum is 53.

The square root of 6430397399 is about 80189.7586914938. The cubic root of 6430397399 is about 1859.5703134120.

The spelling of 6430397399 in words is "six billion, four hundred thirty million, three hundred ninety-seven thousand, three hundred ninety-nine".