138289259 has 2 divisors, whose sum is σ = 138289260. Its totient is φ = 138289258.

The previous prime is 138289253. The next prime is 138289289. The reversal of 138289259 is 952982831.

It is a weak prime.

It is an emirp because it is prime and its reverse (952982831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138289259 - 2⁸ = 138289003 is a prime.

It is not a weakly prime, because it can be changed into another prime (138289253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69144629 + 69144630.

It is an arithmetic number, because the mean of its divisors is an integer number (69144630).

Almost surely, 2^138289259 is an apocalyptic number.

138289259 is a deficient number, since it is larger than the sum of its proper divisors (1).

138289259 is an equidigital number, since it uses as much as digits as its factorization.

138289259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 47.

The square root of 138289259 is about 11759.6453602989. The cubic root of 138289259 is about 517.1257334177.

The spelling of 138289259 in words is "one hundred thirty-eight million, two hundred eighty-nine thousand, two hundred fifty-nine".