138771327 has 4 divisors (see below), whose sum is σ = 185028440. Its totient is φ = 92514216.

The previous prime is 138771319. The next prime is 138771329. The reversal of 138771327 is 723177831.

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

It is not a de Polignac number, because 138771327 - 2³ = 138771319 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 (138771329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23128552 + ... + 23128557.

It is an arithmetic number, because the mean of its divisors is an integer number (46257110).

Almost surely, 2^138771327 is an apocalyptic number.

138771327 is a deficient number, since it is larger than the sum of its proper divisors (46257113).

138771327 is an equidigital number, since it uses as much as digits as its factorization.

138771327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46257112.

The product of its digits is 49392, while the sum is 39.

The square root of 138771327 is about 11780.1242353381. The cubic root of 138771327 is about 517.7259262305.

The spelling of 138771327 in words is "one hundred thirty-eight million, seven hundred seventy-one thousand, three hundred twenty-seven".