27139717 has 4 divisors (see below), whose sum is σ = 29606976. Its totient is φ = 24672460.

The previous prime is 27139687. The next prime is 27139729. The reversal of 27139717 is 71793172.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27139717 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 (27139117) 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 3 ways as a sum of consecutive naturals, for example, 1233613 + ... + 1233634.

It is an arithmetic number, because the mean of its divisors is an integer number (7401744).

Almost surely, 2^27139717 is an apocalyptic number.

It is an amenable number.

27139717 is a deficient number, since it is larger than the sum of its proper divisors (2467259).

27139717 is a wasteful number, since it uses less digits than its factorization.

27139717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2467258.

The product of its digits is 18522, while the sum is 37.

The square root of 27139717 is about 5209.5793496212. The cubic root of 27139717 is about 300.5165803423.

The spelling of 27139717 in words is "twenty-seven million, one hundred thirty-nine thousand, seven hundred seventeen".