27924469 has 2 divisors, whose sum is σ = 27924470. Its totient is φ = 27924468.

The previous prime is 27924467. The next prime is 27924487. The reversal of 27924469 is 96442972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22212369 + 5712100 = 4713^2 + 2390^2 .

It is a cyclic number.

It is not a de Polignac number, because 27924469 - 2¹ = 27924467 is a prime.

It is a super-2 number, since 2×27924469² = 1559551937863922, which contains 22 as substring.

Together with 27924467, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27924467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13962234 + 13962235.

It is an arithmetic number, because the mean of its divisors is an integer number (13962235).

Almost surely, 2^27924469 is an apocalyptic number.

It is an amenable number.

27924469 is a deficient number, since it is larger than the sum of its proper divisors (1).

27924469 is an equidigital number, since it uses as much as digits as its factorization.

27924469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 43.

The square root of 27924469 is about 5284.3607938898. The cubic root of 27924469 is about 303.3856077307.

The spelling of 27924469 in words is "twenty-seven million, nine hundred twenty-four thousand, four hundred sixty-nine".