6246638839 has 12 divisors (see below), whose sum is σ = 7462907536. Its totient is φ = 5121464832.

The previous prime is 6246638807. The next prime is 6246638851. The reversal of 6246638839 is 9388366426.

It is not a de Polignac number, because 6246638839 - 2⁵ = 6246638807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6246638839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6246630839) 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 in 11 ways as a sum of consecutive naturals, for example, 839754 + ... + 847159.

Almost surely, 2^6246638839 is an apocalyptic number.

6246638839 is a deficient number, since it is larger than the sum of its proper divisors (1216268697).

6246638839 is a wasteful number, since it uses less digits than its factorization.

6246638839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686966 (or 1686943 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 55.

The square root of 6246638839 is about 79035.6807967136. The cubic root of 6246638839 is about 1841.6854868297.

The spelling of 6246638839 in words is "six billion, two hundred forty-six million, six hundred thirty-eight thousand, eight hundred thirty-nine".