27770929 has 2 divisors, whose sum is σ = 27770930. Its totient is φ = 27770928.

The previous prime is 27770909. The next prime is 27770933. The reversal of 27770929 is 92907772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26010000 + 1760929 = 5100^2 + 1327^2 .

It is a cyclic number.

It is not a de Polignac number, because 27770929 - 2⁷ = 27770801 is a prime.

It is not a weakly prime, because it can be changed into another prime (27770909) 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, 13885464 + 13885465.

It is an arithmetic number, because the mean of its divisors is an integer number (13885465).

Almost surely, 2^27770929 is an apocalyptic number.

It is an amenable number.

27770929 is a deficient number, since it is larger than the sum of its proper divisors (1).

27770929 is an equidigital number, since it uses as much as digits as its factorization.

27770929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 111132, while the sum is 43.

The square root of 27770929 is about 5269.8129947845. The cubic root of 27770929 is about 302.8285399825.

The spelling of 27770929 in words is "twenty-seven million, seven hundred seventy thousand, nine hundred twenty-nine".