138567079 has 8 divisors (see below), whose sum is σ = 160593408. Its totient is φ = 117098520.

The previous prime is 138567061. The next prime is 138567097. The reversal of 138567079 is 970765831.

It is an interprime number because it is at equal distance from previous prime (138567061) and next prime (138567097).

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

It is not a de Polignac number, because 138567079 - 2¹⁵ = 138534311 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 (138567029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138907 + ... + 139900.

It is an arithmetic number, because the mean of its divisors is an integer number (20074176).

Almost surely, 2^138567079 is an apocalyptic number.

138567079 is a deficient number, since it is larger than the sum of its proper divisors (22026329).

138567079 is an equidigital number, since it uses as much as digits as its factorization.

138567079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278885.

The product of its (nonzero) digits is 317520, while the sum is 46.

The square root of 138567079 is about 11771.4518645747. The cubic root of 138567079 is about 517.4717997500.

The spelling of 138567079 in words is "one hundred thirty-eight million, five hundred sixty-seven thousand, seventy-nine".