138709614 has 16 divisors (see below), whose sum is σ = 292020480. Its totient is φ = 43803000.

The previous prime is 138709609. The next prime is 138709667. The reversal of 138709614 is 416907831.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 608262 + ... + 608489.

It is an arithmetic number, because the mean of its divisors is an integer number (18251280).

Almost surely, 2^138709614 is an apocalyptic number.

138709614 is an abundant number, since it is smaller than the sum of its proper divisors (153310866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138709614 is a wasteful number, since it uses less digits than its factorization.

138709614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216775.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 138709614 is about 11777.5045743995. The cubic root of 138709614 is about 517.6491688817.

The spelling of 138709614 in words is "one hundred thirty-eight million, seven hundred nine thousand, six hundred fourteen".