138303289 has 2 divisors, whose sum is σ = 138303290. Its totient is φ = 138303288.

The previous prime is 138303283. The next prime is 138303311. The reversal of 138303289 is 982303831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137663289 + 640000 = 11733^2 + 800^2 .

It is an emirp because it is prime and its reverse (982303831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138303289 - 2⁷ = 138303161 is a prime.

It is not a weakly prime, because it can be changed into another prime (138303283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69151644 + 69151645.

It is an arithmetic number, because the mean of its divisors is an integer number (69151645).

Almost surely, 2^138303289 is an apocalyptic number.

It is an amenable number.

138303289 is a deficient number, since it is larger than the sum of its proper divisors (1).

138303289 is an equidigital number, since it uses as much as digits as its factorization.

138303289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 138303289 is about 11760.2418767643. The cubic root of 138303289 is about 517.1432209862.

The spelling of 138303289 in words is "one hundred thirty-eight million, three hundred three thousand, two hundred eighty-nine".