138850239 has 8 divisors (see below), whose sum is σ = 201964032. Its totient is φ = 84151640.

The previous prime is 138850211. The next prime is 138850247. The reversal of 138850239 is 932058831.

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

It is a cyclic number.

It is not a de Polignac number, because 138850239 - 2⁵ = 138850207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138850197 and 138850206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138850279) 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 7 ways as a sum of consecutive naturals, for example, 2103759 + ... + 2103824.

It is an arithmetic number, because the mean of its divisors is an integer number (25245504).

Almost surely, 2^138850239 is an apocalyptic number.

138850239 is a deficient number, since it is larger than the sum of its proper divisors (63113793).

138850239 is a wasteful number, since it uses less digits than its factorization.

138850239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4207597.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 138850239 is about 11783.4731297695. The cubic root of 138850239 is about 517.8240421925.

The spelling of 138850239 in words is "one hundred thirty-eight million, eight hundred fifty thousand, two hundred thirty-nine".