27423689 has 2 divisors, whose sum is σ = 27423690. Its totient is φ = 27423688.

The previous prime is 27423673. The next prime is 27423713. The reversal of 27423689 is 98632472.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15054400 + 12369289 = 3880^2 + 3517^2 .

It is a cyclic number.

It is not a de Polignac number, because 27423689 - 2⁴ = 27423673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27423089) 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 as a sum of consecutive naturals, namely, 13711844 + 13711845.

It is an arithmetic number, because the mean of its divisors is an integer number (13711845).

Almost surely, 2^27423689 is an apocalyptic number.

It is an amenable number.

27423689 is a deficient number, since it is larger than the sum of its proper divisors (1).

27423689 is an equidigital number, since it uses as much as digits as its factorization.

27423689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 41.

The square root of 27423689 is about 5236.7632178665. The cubic root of 27423689 is about 301.5610811803.

The spelling of 27423689 in words is "twenty-seven million, four hundred twenty-three thousand, six hundred eighty-nine".