27091189 has 2 divisors, whose sum is σ = 27091190. Its totient is φ = 27091188.

The previous prime is 27091157. The next prime is 27091213. The reversal of 27091189 is 98119072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23912100 + 3179089 = 4890^2 + 1783^2 .

It is a cyclic number.

It is not a de Polignac number, because 27091189 - 2⁵ = 27091157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27091139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13545594 + 13545595.

It is an arithmetic number, because the mean of its divisors is an integer number (13545595).

Almost surely, 2^27091189 is an apocalyptic number.

It is an amenable number.

27091189 is a deficient number, since it is larger than the sum of its proper divisors (1).

27091189 is an equidigital number, since it uses as much as digits as its factorization.

27091189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 27091189 is about 5204.9196919837. The cubic root of 27091189 is about 300.3373575278.

The spelling of 27091189 in words is "twenty-seven million, ninety-one thousand, one hundred eighty-nine".