27977029 has 2 divisors, whose sum is σ = 27977030. Its totient is φ = 27977028.

The previous prime is 27977023. The next prime is 27977051. The reversal of 27977029 is 92077972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21372129 + 6604900 = 4623^2 + 2570^2 .

It is a cyclic number.

It is not a de Polignac number, because 27977029 - 2³ = 27977021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27977021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13988514 + 13988515.

It is an arithmetic number, because the mean of its divisors is an integer number (13988515).

Almost surely, 2^27977029 is an apocalyptic number.

It is an amenable number.

27977029 is a deficient number, since it is larger than the sum of its proper divisors (1).

27977029 is an equidigital number, since it uses as much as digits as its factorization.

27977029 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 27977029 is about 5289.3316212921. The cubic root of 27977029 is about 303.5758346054.

The spelling of 27977029 in words is "twenty-seven million, nine hundred seventy-seven thousand, twenty-nine".