6388704349 has 2 divisors, whose sum is σ = 6388704350. Its totient is φ = 6388704348.

The previous prime is 6388704299. The next prime is 6388704359. The reversal of 6388704349 is 9434078836.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4530232249 + 1858472100 = 67307^2 + 43110^2 .

It is a cyclic number.

It is not a de Polignac number, because 6388704349 - 2¹³ = 6388696157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6388704296 and 6388704305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6388704359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3194352174 + 3194352175.

It is an arithmetic number, because the mean of its divisors is an integer number (3194352175).

Almost surely, 2^6388704349 is an apocalyptic number.

It is an amenable number.

6388704349 is a deficient number, since it is larger than the sum of its proper divisors (1).

6388704349 is an equidigital number, since it uses as much as digits as its factorization.

6388704349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3483648, while the sum is 52.

The square root of 6388704349 is about 79929.3710034053. The cubic root of 6388704349 is about 1855.5426033814.

The spelling of 6388704349 in words is "six billion, three hundred eighty-eight million, seven hundred four thousand, three hundred forty-nine".