204387797 has 2 divisors, whose sum is σ = 204387798. Its totient is φ = 204387796.

The previous prime is 204387791. The next prime is 204387803. The reversal of 204387797 is 797783402.

It is a balanced prime because it is at equal distance from previous prime (204387791) and next prime (204387803).

It can be written as a sum of positive squares in only one way, i.e., 192820996 + 11566801 = 13886^2 + 3401^2 .

It is a cyclic number.

It is not a de Polignac number, because 204387797 - 2¹⁰ = 204386773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204387791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102193898 + 102193899.

It is an arithmetic number, because the mean of its divisors is an integer number (102193899).

Almost surely, 2^204387797 is an apocalyptic number.

It is an amenable number.

204387797 is a deficient number, since it is larger than the sum of its proper divisors (1).

204387797 is an equidigital number, since it uses as much as digits as its factorization.

204387797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 592704, while the sum is 47.

The square root of 204387797 is about 14296.4260219119. The cubic root of 204387797 is about 589.0493135352.

The spelling of 204387797 in words is "two hundred four million, three hundred eighty-seven thousand, seven hundred ninety-seven".