7687387139 has 2 divisors, whose sum is σ = 7687387140. Its totient is φ = 7687387138.

The previous prime is 7687387117. The next prime is 7687387157. The reversal of 7687387139 is 9317837867.

7687387139 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7687387139 - 2²⁰ = 7686338563 is a prime.

It is not a weakly prime, because it can be changed into another prime (7687387109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3843693569 + 3843693570.

It is an arithmetic number, because the mean of its divisors is an integer number (3843693570).

Almost surely, 2^7687387139 is an apocalyptic number.

7687387139 is a deficient number, since it is larger than the sum of its proper divisors (1).

7687387139 is an equidigital number, since it uses as much as digits as its factorization.

7687387139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10668672, while the sum is 59.

The square root of 7687387139 is about 87677.7459735365. The cubic root of 7687387139 is about 1973.6020349275.

The spelling of 7687387139 in words is "seven billion, six hundred eighty-seven million, three hundred eighty-seven thousand, one hundred thirty-nine".