27049391 has 4 divisors (see below), whose sum is σ = 27921984. Its totient is φ = 26176800.

The previous prime is 27049387. The next prime is 27049411. The reversal of 27049391 is 19394072.

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 27049391 - 2² = 27049387 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 (27042391) 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, 436250 + ... + 436311.

It is an arithmetic number, because the mean of its divisors is an integer number (6980496).

Almost surely, 2^27049391 is an apocalyptic number.

27049391 is a deficient number, since it is larger than the sum of its proper divisors (872593).

27049391 is an equidigital number, since it uses as much as digits as its factorization.

27049391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872592.

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

The square root of 27049391 is about 5200.9029023815. The cubic root of 27049391 is about 300.1828181987.

The spelling of 27049391 in words is "twenty-seven million, forty-nine thousand, three hundred ninety-one".