27214991 has 4 divisors (see below), whose sum is σ = 27344184. Its totient is φ = 27085800.

The previous prime is 27214987. The next prime is 27214997. The reversal of 27214991 is 19941272.

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 27214991 - 2² = 27214987 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 (27214997) 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, 64280 + ... + 64701.

It is an arithmetic number, because the mean of its divisors is an integer number (6836046).

Almost surely, 2^27214991 is an apocalyptic number.

27214991 is a deficient number, since it is larger than the sum of its proper divisors (129193).

27214991 is a wasteful number, since it uses less digits than its factorization.

27214991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129192.

The product of its digits is 9072, while the sum is 35.

The square root of 27214991 is about 5216.7989227111. The cubic root of 27214991 is about 300.7941588138.

The spelling of 27214991 in words is "twenty-seven million, two hundred fourteen thousand, nine hundred ninety-one".