27069391 has 4 divisors (see below), whose sum is σ = 27162072. Its totient is φ = 26976712.

The previous prime is 27069347. The next prime is 27069431. The reversal of 27069391 is 19396072.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27069391 is a prime.

It is a super-2 number, since 2×27069391² = 1465503858221762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27069391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27069331) 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, 45901 + ... + 46486.

It is an arithmetic number, because the mean of its divisors is an integer number (6790518).

Almost surely, 2^27069391 is an apocalyptic number.

27069391 is a deficient number, since it is larger than the sum of its proper divisors (92681).

27069391 is an equidigital number, since it uses as much as digits as its factorization.

27069391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92680.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 27069391 is about 5202.8252901669. The cubic root of 27069391 is about 300.2567838478.

The spelling of 27069391 in words is "twenty-seven million, sixty-nine thousand, three hundred ninety-one".