138471359 has 4 divisors (see below), whose sum is σ = 149123016. Its totient is φ = 127819704.

The previous prime is 138471349. The next prime is 138471413. The reversal of 138471359 is 953174831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138471359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138471349) 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, 5325809 + ... + 5325834.

It is an arithmetic number, because the mean of its divisors is an integer number (37280754).

Almost surely, 2^138471359 is an apocalyptic number.

138471359 is a deficient number, since it is larger than the sum of its proper divisors (10651657).

138471359 is a wasteful number, since it uses less digits than its factorization.

138471359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10651656.

The product of its digits is 90720, while the sum is 41.

The square root of 138471359 is about 11767.3853935358. The cubic root of 138471359 is about 517.3526184581.

The spelling of 138471359 in words is "one hundred thirty-eight million, four hundred seventy-one thousand, three hundred fifty-nine".