204922987 has 2 divisors, whose sum is σ = 204922988. Its totient is φ = 204922986.

The previous prime is 204922967. The next prime is 204923003. The reversal of 204922987 is 789229402.

204922987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204922987 - 2⁷ = 204922859 is a prime.

It is not a weakly prime, because it can be changed into another prime (204922937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102461493 + 102461494.

It is an arithmetic number, because the mean of its divisors is an integer number (102461494).

Almost surely, 2^204922987 is an apocalyptic number.

204922987 is a deficient number, since it is larger than the sum of its proper divisors (1).

204922987 is an equidigital number, since it uses as much as digits as its factorization.

204922987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 204922987 is about 14315.1314000256. The cubic root of 204922987 is about 589.5630078334.

The spelling of 204922987 in words is "two hundred four million, nine hundred twenty-two thousand, nine hundred eighty-seven".