6387986347 has 2 divisors, whose sum is σ = 6387986348. Its totient is φ = 6387986346.

The previous prime is 6387986287. The next prime is 6387986357. The reversal of 6387986347 is 7436897836.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6387986347 - 2¹¹ = 6387984299 is a prime.

It is not a weakly prime, because it can be changed into another prime (6387986357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3193993173 + 3193993174.

It is an arithmetic number, because the mean of its divisors is an integer number (3193993174).

Almost surely, 2^6387986347 is an apocalyptic number.

6387986347 is a deficient number, since it is larger than the sum of its proper divisors (1).

6387986347 is an equidigital number, since it uses as much as digits as its factorization.

6387986347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36578304, while the sum is 61.

The square root of 6387986347 is about 79924.8793993460. The cubic root of 6387986347 is about 1855.4730883363.

The spelling of 6387986347 in words is "six billion, three hundred eighty-seven million, nine hundred eighty-six thousand, three hundred forty-seven".