138295589 has 2 divisors, whose sum is σ = 138295590. Its totient is φ = 138295588.

The previous prime is 138295567. The next prime is 138295621. The reversal of 138295589 is 985592831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74822500 + 63473089 = 8650^2 + 7967^2 .

It is an emirp because it is prime and its reverse (985592831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138295589 - 2²⁴ = 121518373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138295189) 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, 69147794 + 69147795.

It is an arithmetic number, because the mean of its divisors is an integer number (69147795).

Almost surely, 2^138295589 is an apocalyptic number.

It is an amenable number.

138295589 is a deficient number, since it is larger than the sum of its proper divisors (1).

138295589 is an equidigital number, since it uses as much as digits as its factorization.

138295589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 777600, while the sum is 50.

The square root of 138295589 is about 11759.9144979885. The cubic root of 138295589 is about 517.1336235362.

The spelling of 138295589 in words is "one hundred thirty-eight million, two hundred ninety-five thousand, five hundred eighty-nine".