27147397 has 4 divisors (see below), whose sum is σ = 27210816. Its totient is φ = 27083980.

The previous prime is 27147389. The next prime is 27147427. The reversal of 27147397 is 79374172.

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 27147397 - 2³ = 27147389 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a pancake number, because a pancake can be divided into 27147397 parts by 7368 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27147377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31063 + ... + 31924.

It is an arithmetic number, because the mean of its divisors is an integer number (6802704).

Almost surely, 2^27147397 is an apocalyptic number.

It is an amenable number.

27147397 is a deficient number, since it is larger than the sum of its proper divisors (63419).

27147397 is an equidigital number, since it uses as much as digits as its factorization.

27147397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63418.

The product of its digits is 74088, while the sum is 40.

The square root of 27147397 is about 5210.3164011411. The cubic root of 27147397 is about 300.5449244068.

The spelling of 27147397 in words is "twenty-seven million, one hundred forty-seven thousand, three hundred ninety-seven".