27491039 has 4 divisors (see below), whose sum is σ = 27655824. Its totient is φ = 27326256.

The previous prime is 27491029. The next prime is 27491041. The reversal of 27491039 is 93019472.

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 27491039 - 2⁸ = 27490783 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 (27491029) 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, 82142 + ... + 82475.

It is an arithmetic number, because the mean of its divisors is an integer number (6913956).

Almost surely, 2^27491039 is an apocalyptic number.

27491039 is a deficient number, since it is larger than the sum of its proper divisors (164785).

27491039 is a wasteful number, since it uses less digits than its factorization.

27491039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164784.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 27491039 is about 5243.1897734108. The cubic root of 27491039 is about 301.8077479078.

The spelling of 27491039 in words is "twenty-seven million, four hundred ninety-one thousand, thirty-nine".