27430397 has 2 divisors, whose sum is σ = 27430398. Its totient is φ = 27430396.

The previous prime is 27430393. The next prime is 27430427. The reversal of 27430397 is 79303472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24492601 + 2937796 = 4949^2 + 1714^2 .

It is a cyclic number.

It is not a de Polignac number, because 27430397 - 2² = 27430393 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27430393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13715198 + 13715199.

It is an arithmetic number, because the mean of its divisors is an integer number (13715199).

Almost surely, 2^27430397 is an apocalyptic number.

It is an amenable number.

27430397 is a deficient number, since it is larger than the sum of its proper divisors (1).

27430397 is an equidigital number, since it uses as much as digits as its factorization.

27430397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 27430397 is about 5237.4036506651. The cubic root of 27430397 is about 301.5856670632.

The spelling of 27430397 in words is "twenty-seven million, four hundred thirty thousand, three hundred ninety-seven".