27864349 has 4 divisors (see below), whose sum is σ = 27908064. Its totient is φ = 27820636.

The previous prime is 27864323. The next prime is 27864359. The reversal of 27864349 is 94346872.

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 not a de Polignac number, because 27864349 - 2⁹ = 27863837 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 (27864359) 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, 20887 + ... + 22180.

It is an arithmetic number, because the mean of its divisors is an integer number (6977016).

Almost surely, 2^27864349 is an apocalyptic number.

It is an amenable number.

27864349 is a deficient number, since it is larger than the sum of its proper divisors (43715).

27864349 is an equidigital number, since it uses as much as digits as its factorization.

27864349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43714.

The product of its digits is 290304, while the sum is 43.

The square root of 27864349 is about 5278.6692451791. The cubic root of 27864349 is about 303.1677265595.

The spelling of 27864349 in words is "twenty-seven million, eight hundred sixty-four thousand, three hundred forty-nine".