138327727 has 12 divisors (see below), whose sum is σ = 148249584. Its totient is φ = 128749280.

The previous prime is 138327713. The next prime is 138327751. The reversal of 138327727 is 727723831.

It is not a de Polignac number, because 138327727 - 2⁷ = 138327599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138327727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138327227) 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 in 11 ways as a sum of consecutive naturals, for example, 360978 + ... + 361360.

It is an arithmetic number, because the mean of its divisors is an integer number (12354132).

Almost surely, 2^138327727 is an apocalyptic number.

138327727 is a deficient number, since it is larger than the sum of its proper divisors (9921857).

138327727 is an frugal number, since it uses more digits than its factorization.

138327727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830 (or 447 counting only the distinct ones).

The product of its digits is 98784, while the sum is 40.

The square root of 138327727 is about 11761.2808401126. The cubic root of 138327727 is about 517.1736786898.

The spelling of 138327727 in words is "one hundred thirty-eight million, three hundred twenty-seven thousand, seven hundred twenty-seven".