6252442639 has 2 divisors, whose sum is σ = 6252442640. Its totient is φ = 6252442638.

The previous prime is 6252442591. The next prime is 6252442657. The reversal of 6252442639 is 9362442526.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6252442639 - 2¹⁷ = 6252311567 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6252442595 and 6252442604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6252442139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3126221319 + 3126221320.

It is an arithmetic number, because the mean of its divisors is an integer number (3126221320).

Almost surely, 2^6252442639 is an apocalyptic number.

6252442639 is a deficient number, since it is larger than the sum of its proper divisors (1).

6252442639 is an equidigital number, since it uses as much as digits as its factorization.

6252442639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 43.

The square root of 6252442639 is about 79072.3886005728. The cubic root of 6252442639 is about 1842.2556849726.

The spelling of 6252442639 in words is "six billion, two hundred fifty-two million, four hundred forty-two thousand, six hundred thirty-nine".