27930689 has 2 divisors, whose sum is σ = 27930690. Its totient is φ = 27930688.

The previous prime is 27930673. The next prime is 27930697. The reversal of 27930689 is 98603972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25928464 + 2002225 = 5092^2 + 1415^2 .

It is a cyclic number.

It is not a de Polignac number, because 27930689 - 2⁴ = 27930673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27932689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13965344 + 13965345.

It is an arithmetic number, because the mean of its divisors is an integer number (13965345).

Almost surely, 2^27930689 is an apocalyptic number.

It is an amenable number.

27930689 is a deficient number, since it is larger than the sum of its proper divisors (1).

27930689 is an equidigital number, since it uses as much as digits as its factorization.

27930689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 27930689 is about 5284.9492902014. The cubic root of 27930689 is about 303.4081318043.

The spelling of 27930689 in words is "twenty-seven million, nine hundred thirty thousand, six hundred eighty-nine".