27042949 has 2 divisors, whose sum is σ = 27042950. Its totient is φ = 27042948.

The previous prime is 27042941. The next prime is 27042973. The reversal of 27042949 is 94924072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20412324 + 6630625 = 4518^2 + 2575^2 .

It is a cyclic number.

It is not a de Polignac number, because 27042949 - 2³ = 27042941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27042941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13521474 + 13521475.

It is an arithmetic number, because the mean of its divisors is an integer number (13521475).

Almost surely, 2^27042949 is an apocalyptic number.

It is an amenable number.

27042949 is a deficient number, since it is larger than the sum of its proper divisors (1).

27042949 is an equidigital number, since it uses as much as digits as its factorization.

27042949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 27042949 is about 5200.2835499615. The cubic root of 27042949 is about 300.1589861002.

The spelling of 27042949 in words is "twenty-seven million, forty-two thousand, nine hundred forty-nine".