138354717 has 8 divisors (see below), whose sum is σ = 184607424. Its totient is φ = 92169248.

The previous prime is 138354707. The next prime is 138354731. The reversal of 138354717 is 717453831.

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 138354717 - 2¹² = 138350621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138354707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11793 + ... + 20390.

It is an arithmetic number, because the mean of its divisors is an integer number (23075928).

Almost surely, 2^138354717 is an apocalyptic number.

It is an amenable number.

138354717 is a deficient number, since it is larger than the sum of its proper divisors (46252707).

138354717 is a wasteful number, since it uses less digits than its factorization.

138354717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33619.

The product of its digits is 70560, while the sum is 39.

The square root of 138354717 is about 11762.4281931921. The cubic root of 138354717 is about 517.2073128477.

The spelling of 138354717 in words is "one hundred thirty-eight million, three hundred fifty-four thousand, seven hundred seventeen".