27120949 has 2 divisors, whose sum is σ = 27120950. Its totient is φ = 27120948.

The previous prime is 27120941. The next prime is 27120971. The reversal of 27120949 is 94902172.

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., 27112849 + 8100 = 5207^2 + 90^2 .

It is a cyclic number.

It is not a de Polignac number, because 27120949 - 2³ = 27120941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27120941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13560474 + 13560475.

It is an arithmetic number, because the mean of its divisors is an integer number (13560475).

Almost surely, 2^27120949 is an apocalyptic number.

It is an amenable number.

27120949 is a deficient number, since it is larger than the sum of its proper divisors (1).

27120949 is an equidigital number, since it uses as much as digits as its factorization.

27120949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 27120949 is about 5207.7777410331. Note that the first 4 decimals coincide. The cubic root of 27120949 is about 300.4472920273.

It can be divided in two parts, 27 and 120949, that multiplied together give a palindrome (3265623).

The spelling of 27120949 in words is "twenty-seven million, one hundred twenty thousand, nine hundred forty-nine".