138834799 has 2 divisors, whose sum is σ = 138834800. Its totient is φ = 138834798.

The previous prime is 138834793. The next prime is 138834809. The reversal of 138834799 is 997438831.

It is a weak prime.

It is an emirp because it is prime and its reverse (997438831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138834799 - 2¹¹ = 138832751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138834793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69417399 + 69417400.

It is an arithmetic number, because the mean of its divisors is an integer number (69417400).

Almost surely, 2^138834799 is an apocalyptic number.

138834799 is a deficient number, since it is larger than the sum of its proper divisors (1).

138834799 is an equidigital number, since it uses as much as digits as its factorization.

138834799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 52.

The square root of 138834799 is about 11782.8179566689. The cubic root of 138834799 is about 517.8048476521.

The spelling of 138834799 in words is "one hundred thirty-eight million, eight hundred thirty-four thousand, seven hundred ninety-nine".