139527677 has 2 divisors, whose sum is σ = 139527678. Its totient is φ = 139527676.

The previous prime is 139527599. The next prime is 139527691. The reversal of 139527677 is 776725931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138627076 + 900601 = 11774^2 + 949^2 .

It is a cyclic number.

It is not a de Polignac number, because 139527677 - 2²⁰ = 138479101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139527077) 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, 69763838 + 69763839.

It is an arithmetic number, because the mean of its divisors is an integer number (69763839).

Almost surely, 2^139527677 is an apocalyptic number.

It is an amenable number.

139527677 is a deficient number, since it is larger than the sum of its proper divisors (1).

139527677 is an equidigital number, since it uses as much as digits as its factorization.

139527677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 555660, while the sum is 47.

The square root of 139527677 is about 11812.1834137470. The cubic root of 139527677 is about 518.6648155088.

The spelling of 139527677 in words is "one hundred thirty-nine million, five hundred twenty-seven thousand, six hundred seventy-seven".