138789796 has 6 divisors (see below), whose sum is σ = 242882150. Its totient is φ = 69394896.

The previous prime is 138789793. The next prime is 138789803. The reversal of 138789796 is 697987831.

It can be written as a sum of positive squares in only one way, i.e., 106708900 + 32080896 = 10330^2 + 5664^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 138789796.

It is not an unprimeable number, because it can be changed into a prime (138789793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17348721 + ... + 17348728.

Almost surely, 2^138789796 is an apocalyptic number.

It is an amenable number.

138789796 is a deficient number, since it is larger than the sum of its proper divisors (104092354).

138789796 is a wasteful number, since it uses less digits than its factorization.

138789796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34697453 (or 34697451 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 58.

The square root of 138789796 is about 11780.9081144027. The cubic root of 138789796 is about 517.7488931651.

The spelling of 138789796 in words is "one hundred thirty-eight million, seven hundred eighty-nine thousand, seven hundred ninety-six".