27440089 has 2 divisors, whose sum is σ = 27440090. Its totient is φ = 27440088.

The previous prime is 27440087. The next prime is 27440099. The reversal of 27440089 is 98004472.

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., 15468489 + 11971600 = 3933^2 + 3460^2 .

It is a cyclic number.

It is not a de Polignac number, because 27440089 - 2¹ = 27440087 is a prime.

Together with 27440087, it forms a pair of twin primes.

It is equal to p_1708756 and since 27440089 and 1708756 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (27440087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13720044 + 13720045.

It is an arithmetic number, because the mean of its divisors is an integer number (13720045).

Almost surely, 2^27440089 is an apocalyptic number.

It is an amenable number.

27440089 is a deficient number, since it is larger than the sum of its proper divisors (1).

27440089 is an equidigital number, since it uses as much as digits as its factorization.

27440089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 27440089 is about 5238.3288365661. The cubic root of 27440089 is about 301.6211827005.

The spelling of 27440089 in words is "twenty-seven million, four hundred forty thousand, eighty-nine".