206469049 has 2 divisors, whose sum is σ = 206469050. Its totient is φ = 206469048.

The previous prime is 206469037. The next prime is 206469077. The reversal of 206469049 is 940964602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107267449 + 99201600 = 10357^2 + 9960^2 .

It is a cyclic number.

It is not a de Polignac number, because 206469049 - 2⁷ = 206468921 is a prime.

It is not a weakly prime, because it can be changed into another prime (206469089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103234524 + 103234525.

It is an arithmetic number, because the mean of its divisors is an integer number (103234525).

Almost surely, 2^206469049 is an apocalyptic number.

It is an amenable number.

206469049 is a deficient number, since it is larger than the sum of its proper divisors (1).

206469049 is an equidigital number, since it uses as much as digits as its factorization.

206469049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 206469049 is about 14369.0308998206. The cubic root of 206469049 is about 591.0419670478.

The spelling of 206469049 in words is "two hundred six million, four hundred sixty-nine thousand, forty-nine".