138350389 has 2 divisors, whose sum is σ = 138350390. Its totient is φ = 138350388.

The previous prime is 138350383. The next prime is 138350423. The reversal of 138350389 is 983053831.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120626289 + 17724100 = 10983^2 + 4210^2 .

It is a cyclic number.

It is not a de Polignac number, because 138350389 - 2¹¹ = 138348341 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138350383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69175194 + 69175195.

It is an arithmetic number, because the mean of its divisors is an integer number (69175195).

Almost surely, 2^138350389 is an apocalyptic number.

It is an amenable number.

138350389 is a deficient number, since it is larger than the sum of its proper divisors (1).

138350389 is an equidigital number, since it uses as much as digits as its factorization.

138350389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 138350389 is about 11762.2442161349. The cubic root of 138350389 is about 517.2019197137.

The spelling of 138350389 in words is "one hundred thirty-eight million, three hundred fifty thousand, three hundred eighty-nine".