138930922 has 8 divisors (see below), whose sum is σ = 224426916. Its totient is φ = 64121952.

The previous prime is 138930887. The next prime is 138930923. The reversal of 138930922 is 229039831.

It can be written as a sum of positive squares in 2 ways, for example, as 131537961 + 7392961 = 11469^2 + 2719^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (138930923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2671723 + ... + 2671774.

Almost surely, 2^138930922 is an apocalyptic number.

138930922 is a deficient number, since it is larger than the sum of its proper divisors (85495994).

138930922 is a wasteful number, since it uses less digits than its factorization.

138930922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5343512.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 138930922 is about 11786.8961987455. The cubic root of 138930922 is about 517.9243217160.

The spelling of 138930922 in words is "one hundred thirty-eight million, nine hundred thirty thousand, nine hundred twenty-two".