6872156939 has 2 divisors, whose sum is σ = 6872156940. Its totient is φ = 6872156938.

The previous prime is 6872156897. The next prime is 6872157011. The reversal of 6872156939 is 9396512786.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6872156939 is a prime.

It is not a weakly prime, because it can be changed into another prime (6872156339) 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, 3436078469 + 3436078470.

It is an arithmetic number, because the mean of its divisors is an integer number (3436078470).

Almost surely, 2^6872156939 is an apocalyptic number.

6872156939 is a deficient number, since it is larger than the sum of its proper divisors (1).

6872156939 is an equidigital number, since it uses as much as digits as its factorization.

6872156939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 56.

The square root of 6872156939 is about 82898.4736831746. The cubic root of 6872156939 is about 1901.2140845248.

The spelling of 6872156939 in words is "six billion, eight hundred seventy-two million, one hundred fifty-six thousand, nine hundred thirty-nine".