204899729 has 2 divisors, whose sum is σ = 204899730. Its totient is φ = 204899728.

The previous prime is 204899713. The next prime is 204899771. The reversal of 204899729 is 927998402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141729025 + 63170704 = 11905^2 + 7948^2 .

It is a cyclic number.

It is not a de Polignac number, because 204899729 - 2⁴ = 204899713 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (204899789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102449864 + 102449865.

It is an arithmetic number, because the mean of its divisors is an integer number (102449865).

Almost surely, 2^204899729 is an apocalyptic number.

It is an amenable number.

204899729 is a deficient number, since it is larger than the sum of its proper divisors (1).

204899729 is an equidigital number, since it uses as much as digits as its factorization.

204899729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 204899729 is about 14314.3190197788. The cubic root of 204899729 is about 589.5407025836.

The spelling of 204899729 in words is "two hundred four million, eight hundred ninety-nine thousand, seven hundred twenty-nine".