138338099 has 2 divisors, whose sum is σ = 138338100. Its totient is φ = 138338098.

The previous prime is 138338051. The next prime is 138338111. The reversal of 138338099 is 990833831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138338099 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (138338029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69169049 + 69169050.

It is an arithmetic number, because the mean of its divisors is an integer number (69169050).

Almost surely, 2^138338099 is an apocalyptic number.

138338099 is a deficient number, since it is larger than the sum of its proper divisors (1).

138338099 is an equidigital number, since it uses as much as digits as its factorization.

138338099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 138338099 is about 11761.7217702171. The cubic root of 138338099 is about 517.1866044940.

The spelling of 138338099 in words is "one hundred thirty-eight million, three hundred thirty-eight thousand, ninety-nine".