204232409 has 2 divisors, whose sum is σ = 204232410. Its totient is φ = 204232408.

The previous prime is 204232397. The next prime is 204232487. The reversal of 204232409 is 904232402.

204232409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134560000 + 69672409 = 11600^2 + 8347^2 .

It is a cyclic number.

It is not a de Polignac number, because 204232409 - 2⁴ = 204232393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (204202409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102116204 + 102116205.

It is an arithmetic number, because the mean of its divisors is an integer number (102116205).

Almost surely, 2^204232409 is an apocalyptic number.

It is an amenable number.

204232409 is a deficient number, since it is larger than the sum of its proper divisors (1).

204232409 is an equidigital number, since it uses as much as digits as its factorization.

204232409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 204232409 is about 14290.9904835179. The cubic root of 204232409 is about 588.8999986842.

The spelling of 204232409 in words is "two hundred four million, two hundred thirty-two thousand, four hundred nine".