138928883 has 2 divisors, whose sum is σ = 138928884. Its totient is φ = 138928882.

The previous prime is 138928877. The next prime is 138928891. The reversal of 138928883 is 388829831.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138928883 is a prime.

It is not a weakly prime, because it can be changed into another prime (138928843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69464441 + 69464442.

It is an arithmetic number, because the mean of its divisors is an integer number (69464442).

Almost surely, 2^138928883 is an apocalyptic number.

138928883 is a deficient number, since it is larger than the sum of its proper divisors (1).

138928883 is an equidigital number, since it uses as much as digits as its factorization.

138928883 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 663552, while the sum is 50.

The square root of 138928883 is about 11786.8097040718. The cubic root of 138928883 is about 517.9217879559.

The spelling of 138928883 in words is "one hundred thirty-eight million, nine hundred twenty-eight thousand, eight hundred eighty-three".