6390806377 has 2 divisors, whose sum is σ = 6390806378. Its totient is φ = 6390806376.

The previous prime is 6390806369. The next prime is 6390806393. The reversal of 6390806377 is 7736080936.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3787663936 + 2603142441 = 61544^2 + 51021^2 .

It is a cyclic number.

It is not a de Polignac number, because 6390806377 - 2³ = 6390806369 is a prime.

It is a super-2 number, since 2×6390806377² = 81684812296607732258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6390806377.

It is not a weakly prime, because it can be changed into another prime (6390806327) 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, 3195403188 + 3195403189.

It is an arithmetic number, because the mean of its divisors is an integer number (3195403189).

Almost surely, 2^6390806377 is an apocalyptic number.

It is an amenable number.

6390806377 is a deficient number, since it is larger than the sum of its proper divisors (1).

6390806377 is an equidigital number, since it uses as much as digits as its factorization.

6390806377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072, while the sum is 49.

The square root of 6390806377 is about 79942.5192059895. The cubic root of 6390806377 is about 1855.7460862056.

The spelling of 6390806377 in words is "six billion, three hundred ninety million, eight hundred six thousand, three hundred seventy-seven".