138222717 has 8 divisors (see below), whose sum is σ = 184556160. Its totient is φ = 92018880.

The previous prime is 138222703. The next prime is 138222731. The reversal of 138222717 is 717222831.

It is an interprime number because it is at equal distance from previous prime (138222703) and next prime (138222731).

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

It is not a de Polignac number, because 138222717 - 2¹⁰ = 138221693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138222757) 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, 29884 + ... + 34197.

It is an arithmetic number, because the mean of its divisors is an integer number (23069520).

Almost surely, 2^138222717 is an apocalyptic number.

It is an amenable number.

138222717 is a deficient number, since it is larger than the sum of its proper divisors (46333443).

138222717 is an equidigital number, since it uses as much as digits as its factorization.

138222717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64803.

The product of its digits is 9408, while the sum is 33.

The square root of 138222717 is about 11756.8157678855. The cubic root of 138222717 is about 517.0427766224.

The spelling of 138222717 in words is "one hundred thirty-eight million, two hundred twenty-two thousand, seven hundred seventeen".