205828429 has 2 divisors, whose sum is σ = 205828430. Its totient is φ = 205828428.

The previous prime is 205828421. The next prime is 205828459. The reversal of 205828429 is 924828502.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158080329 + 47748100 = 12573^2 + 6910^2 .

It is a cyclic number.

It is not a de Polignac number, because 205828429 - 2³ = 205828421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205828391 and 205828400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205828421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102914214 + 102914215.

It is an arithmetic number, because the mean of its divisors is an integer number (102914215).

Almost surely, 2^205828429 is an apocalyptic number.

It is an amenable number.

205828429 is a deficient number, since it is larger than the sum of its proper divisors (1).

205828429 is an equidigital number, since it uses as much as digits as its factorization.

205828429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 205828429 is about 14346.7218903832. The cubic root of 205828429 is about 590.4300503407.

The spelling of 205828429 in words is "two hundred five million, eight hundred twenty-eight thousand, four hundred twenty-nine".