27927969 has 4 divisors (see below), whose sum is σ = 37237296. Its totient is φ = 18618644.

The previous prime is 27927961. The next prime is 27927973. The reversal of 27927969 is 96972972.

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 27927969 - 2³ = 27927961 is a prime.

It is a super-2 number, since 2×27927969² = 1559942904929922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27927961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4654659 + ... + 4654664.

It is an arithmetic number, because the mean of its divisors is an integer number (9309324).

Almost surely, 2^27927969 is an apocalyptic number.

It is an amenable number.

27927969 is a deficient number, since it is larger than the sum of its proper divisors (9309327).

27927969 is an equidigital number, since it uses as much as digits as its factorization.

27927969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9309326.

The product of its digits is 857304, while the sum is 51.

The square root of 27927969 is about 5284.6919493950. The cubic root of 27927969 is about 303.3982824601.

The spelling of 27927969 in words is "twenty-seven million, nine hundred twenty-seven thousand, nine hundred sixty-nine".