27108139 has 4 divisors (see below), whose sum is σ = 27451360. Its totient is φ = 26764920.

The previous prime is 27108131. The next prime is 27108157. The reversal of 27108139 is 93180172.

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

It is a cyclic number.

It is not a de Polignac number, because 27108139 - 2³ = 27108131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27108139.

It is not an unprimeable number, because it can be changed into a prime (27108131) 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, 171492 + ... + 171649.

It is an arithmetic number, because the mean of its divisors is an integer number (6862840).

Almost surely, 2^27108139 is an apocalyptic number.

27108139 is a deficient number, since it is larger than the sum of its proper divisors (343221).

27108139 is an equidigital number, since it uses as much as digits as its factorization.

27108139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343220.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 27108139 is about 5206.5477045735. The cubic root of 27108139 is about 300.3999812944.

The spelling of 27108139 in words is "twenty-seven million, one hundred eight thousand, one hundred thirty-nine".