27430427 has 2 divisors, whose sum is σ = 27430428. Its totient is φ = 27430426.

The previous prime is 27430397. The next prime is 27430439. The reversal of 27430427 is 72403472.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27430427 - 2⁶ = 27430363 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27430427.

It is not a weakly prime, because it can be changed into another prime (27430127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13715213 + 13715214.

It is an arithmetic number, because the mean of its divisors is an integer number (13715214).

Almost surely, 2^27430427 is an apocalyptic number.

27430427 is a deficient number, since it is larger than the sum of its proper divisors (1).

27430427 is an equidigital number, since it uses as much as digits as its factorization.

27430427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 29.

The square root of 27430427 is about 5237.4065146788. The cubic root of 27430427 is about 301.5857770089.

Adding to 27430427 its reverse (72403472), we get a palindrome (99833899).

The spelling of 27430427 in words is "twenty-seven million, four hundred thirty thousand, four hundred twenty-seven".