6394027639 has 2 divisors, whose sum is σ = 6394027640. Its totient is φ = 6394027638.

The previous prime is 6394027603. The next prime is 6394027657. The reversal of 6394027639 is 9367204936.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6394027639 - 2¹¹ = 6394025591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6394027592 and 6394027601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6394024639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3197013819 + 3197013820.

It is an arithmetic number, because the mean of its divisors is an integer number (3197013820).

Almost surely, 2^6394027639 is an apocalyptic number.

6394027639 is a deficient number, since it is larger than the sum of its proper divisors (1).

6394027639 is an equidigital number, since it uses as much as digits as its factorization.

6394027639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 49.

The square root of 6394027639 is about 79962.6640314091. The cubic root of 6394027639 is about 1856.0578277871.

The spelling of 6394027639 in words is "six billion, three hundred ninety-four million, twenty-seven thousand, six hundred thirty-nine".