27139361 has 4 divisors (see below), whose sum is σ = 28735812. Its totient is φ = 25542912.

The previous prime is 27139313. The next prime is 27139369. The reversal of 27139361 is 16393172.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24010000 + 3129361 = 4900^2 + 1769^2 .

It is a cyclic number.

It is not a de Polignac number, because 27139361 - 2²² = 22945057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27139369) 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, 798200 + ... + 798233.

It is an arithmetic number, because the mean of its divisors is an integer number (7183953).

Almost surely, 2^27139361 is an apocalyptic number.

It is an amenable number.

27139361 is a deficient number, since it is larger than the sum of its proper divisors (1596451).

27139361 is a wasteful number, since it uses less digits than its factorization.

27139361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596450.

The product of its digits is 6804, while the sum is 32.

The square root of 27139361 is about 5209.5451816833. The cubic root of 27139361 is about 300.5152663471.

The spelling of 27139361 in words is "twenty-seven million, one hundred thirty-nine thousand, three hundred sixty-one".