27434369 has 2 divisors, whose sum is σ = 27434370. Its totient is φ = 27434368.

The previous prime is 27434321. The next prime is 27434383. The reversal of 27434369 is 96343472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27196225 + 238144 = 5215^2 + 488^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27434369 is a prime.

It is a super-2 number, since 2×27434369² = 1505289204856322, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (27434269) 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 as a sum of consecutive naturals, namely, 13717184 + 13717185.

It is an arithmetic number, because the mean of its divisors is an integer number (13717185).

Almost surely, 2^27434369 is an apocalyptic number.

It is an amenable number.

27434369 is a deficient number, since it is larger than the sum of its proper divisors (1).

27434369 is an equidigital number, since it uses as much as digits as its factorization.

27434369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 38.

The square root of 27434369 is about 5237.7828324588. The cubic root of 27434369 is about 301.6002231832.

It can be divided in two parts, 274 and 34369, that added together give a palindrome (34643).

The spelling of 27434369 in words is "twenty-seven million, four hundred thirty-four thousand, three hundred sixty-nine".