6404306387 has 2 divisors, whose sum is σ = 6404306388. Its totient is φ = 6404306386.

The previous prime is 6404306353. The next prime is 6404306423. The reversal of 6404306387 is 7836034046.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6404306387 - 2¹⁰ = 6404305363 is a prime.

It is not a weakly prime, because it can be changed into another prime (6404306347) 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, 3202153193 + 3202153194.

It is an arithmetic number, because the mean of its divisors is an integer number (3202153194).

Almost surely, 2^6404306387 is an apocalyptic number.

6404306387 is a deficient number, since it is larger than the sum of its proper divisors (1).

6404306387 is an equidigital number, since it uses as much as digits as its factorization.

6404306387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 41.

The square root of 6404306387 is about 80026.9103926923. The cubic root of 6404306387 is about 1857.0518667004.

The spelling of 6404306387 in words is "six billion, four hundred four million, three hundred six thousand, three hundred eighty-seven".