27804000439 has 2 divisors, whose sum is σ = 27804000440. Its totient is φ = 27804000438.

The previous prime is 27804000401. The next prime is 27804000443. The reversal of 27804000439 is 93400040872.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27804000439 - 2⁷ = 27804000311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27804000398 and 27804000407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27804000739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13902000219 + 13902000220.

It is an arithmetic number, because the mean of its divisors is an integer number (13902000220).

Almost surely, 2^27804000439 is an apocalyptic number.

27804000439 is a deficient number, since it is larger than the sum of its proper divisors (1).

27804000439 is an equidigital number, since it uses as much as digits as its factorization.

27804000439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 27804000439 in words is "twenty-seven billion, eight hundred four million, four hundred thirty-nine", and thus it is an aban number.