27685949 has 2 divisors, whose sum is σ = 27685950. Its totient is φ = 27685948.

The previous prime is 27685939. The next prime is 27685967. The reversal of 27685949 is 94958672.

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., 18983449 + 8702500 = 4357^2 + 2950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27685949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27685897 and 27685906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27685909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13842974 + 13842975.

It is an arithmetic number, because the mean of its divisors is an integer number (13842975).

Almost surely, 2^27685949 is an apocalyptic number.

It is an amenable number.

27685949 is a deficient number, since it is larger than the sum of its proper divisors (1).

27685949 is an equidigital number, since it uses as much as digits as its factorization.

27685949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 50.

The square root of 27685949 is about 5261.7439124306. The cubic root of 27685949 is about 302.5193357856.

The spelling of 27685949 in words is "twenty-seven million, six hundred eighty-five thousand, nine hundred forty-nine".