204027977 has 2 divisors, whose sum is σ = 204027978. Its totient is φ = 204027976.

The previous prime is 204027907. The next prime is 204028003. The reversal of 204027977 is 779720402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184172041 + 19855936 = 13571^2 + 4456^2 .

It is a cyclic number.

It is not a de Polignac number, because 204027977 - 2¹⁶ = 203962441 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204027977.

It is not a weakly prime, because it can be changed into another prime (204027907) 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, 102013988 + 102013989.

It is an arithmetic number, because the mean of its divisors is an integer number (102013989).

Almost surely, 2^204027977 is an apocalyptic number.

It is an amenable number.

204027977 is a deficient number, since it is larger than the sum of its proper divisors (1).

204027977 is an equidigital number, since it uses as much as digits as its factorization.

204027977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 204027977 is about 14283.8362144068. The cubic root of 204027977 is about 588.7034412480.

The spelling of 204027977 in words is "two hundred four million, twenty-seven thousand, nine hundred seventy-seven".