138869695 has 16 divisors (see below), whose sum is σ = 172176480. Its totient is φ = 107443584.

The previous prime is 138869683. The next prime is 138869701. The reversal of 138869695 is 596968831.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 138869695 - 2⁷ = 138869567 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29836 + ... + 34174.

It is an arithmetic number, because the mean of its divisors is an integer number (10761030).

Almost surely, 2^138869695 is an apocalyptic number.

138869695 is a deficient number, since it is larger than the sum of its proper divisors (33306785).

138869695 is a wasteful number, since it uses less digits than its factorization.

138869695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4554.

The product of its digits is 2799360, while the sum is 55.

The square root of 138869695 is about 11784.2986639002. The cubic root of 138869695 is about 517.8482272764.

The spelling of 138869695 in words is "one hundred thirty-eight million, eight hundred sixty-nine thousand, six hundred ninety-five".