6239626639 has 2 divisors, whose sum is σ = 6239626640. Its totient is φ = 6239626638.

The previous prime is 6239626537. The next prime is 6239626663. The reversal of 6239626639 is 9366269326.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6239626639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6239626669) 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, 3119813319 + 3119813320.

It is an arithmetic number, because the mean of its divisors is an integer number (3119813320).

Almost surely, 2^6239626639 is an apocalyptic number.

6239626639 is a deficient number, since it is larger than the sum of its proper divisors (1).

6239626639 is an equidigital number, since it uses as much as digits as its factorization.

6239626639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3779136, while the sum is 52.

The square root of 6239626639 is about 78991.3073635321. The cubic root of 6239626639 is about 1840.9960972957.

The spelling of 6239626639 in words is "six billion, two hundred thirty-nine million, six hundred twenty-six thousand, six hundred thirty-nine".