27394649 has 2 divisors, whose sum is σ = 27394650. Its totient is φ = 27394648.

The previous prime is 27394603. The next prime is 27394651. The reversal of 27394649 is 94649372.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20866624 + 6528025 = 4568^2 + 2555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27394649 is a prime.

Together with 27394651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27394249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13697324 + 13697325.

It is an arithmetic number, because the mean of its divisors is an integer number (13697325).

Almost surely, 2^27394649 is an apocalyptic number.

It is an amenable number.

27394649 is a deficient number, since it is larger than the sum of its proper divisors (1).

27394649 is an equidigital number, since it uses as much as digits as its factorization.

27394649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 44.

The square root of 27394649 is about 5233.9897783622. The cubic root of 27394649 is about 301.4545987060.

The spelling of 27394649 in words is "twenty-seven million, three hundred ninety-four thousand, six hundred forty-nine".