27384389 has 2 divisors, whose sum is σ = 27384390. Its totient is φ = 27384388.

The previous prime is 27384373. The next prime is 27384407. The reversal of 27384389 is 98348372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27384289 + 100 = 5233^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 27384389 - 2⁴ = 27384373 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 (27384359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13692194 + 13692195.

It is an arithmetic number, because the mean of its divisors is an integer number (13692195).

Almost surely, 2^27384389 is an apocalyptic number.

It is an amenable number.

27384389 is a deficient number, since it is larger than the sum of its proper divisors (1).

27384389 is an equidigital number, since it uses as much as digits as its factorization.

27384389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 44.

The square root of 27384389 is about 5233.0095547400. The cubic root of 27384389 is about 301.4169598422.

The spelling of 27384389 in words is "twenty-seven million, three hundred eighty-four thousand, three hundred eighty-nine".