27869189 has 2 divisors, whose sum is σ = 27869190. Its totient is φ = 27869188.

The previous prime is 27869173. The next prime is 27869201. The reversal of 27869189 is 98196872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27478564 + 390625 = 5242^2 + 625^2 .

It is a cyclic number.

It is not a de Polignac number, because 27869189 - 2⁴ = 27869173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27868189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13934594 + 13934595.

It is an arithmetic number, because the mean of its divisors is an integer number (13934595).

Almost surely, 2^27869189 is an apocalyptic number.

It is an amenable number.

27869189 is a deficient number, since it is larger than the sum of its proper divisors (1).

27869189 is an equidigital number, since it uses as much as digits as its factorization.

27869189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 50.

The square root of 27869189 is about 5279.1276741522. The cubic root of 27869189 is about 303.1852788190.

The spelling of 27869189 in words is "twenty-seven million, eight hundred sixty-nine thousand, one hundred eighty-nine".