204861829 has 4 divisors (see below), whose sum is σ = 211926060. Its totient is φ = 197797600.

The previous prime is 204861827. The next prime is 204861841. The reversal of 204861829 is 928168402.

204861829 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 98049604 + 106812225 = 9902^2 + 10335^2 .

It is a cyclic number.

It is not a de Polignac number, because 204861829 - 2¹ = 204861827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204861791 and 204861800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204861827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3532072 + ... + 3532129.

It is an arithmetic number, because the mean of its divisors is an integer number (52981515).

Almost surely, 2^204861829 is an apocalyptic number.

204861829 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

204861829 is a deficient number, since it is larger than the sum of its proper divisors (7064231).

204861829 is an equidigital number, since it uses as much as digits as its factorization.

204861829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7064230.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 204861829 is about 14312.9951093403. The cubic root of 204861829 is about 589.5043515182.

The spelling of 204861829 in words is "two hundred four million, eight hundred sixty-one thousand, eight hundred twenty-nine".