210066449 has 2 divisors, whose sum is σ = 210066450. Its totient is φ = 210066448.

The previous prime is 210066379. The next prime is 210066473. The reversal of 210066449 is 944660012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152078224 + 57988225 = 12332^2 + 7615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210066449 is a prime.

It is not a weakly prime, because it can be changed into another prime (210062449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105033224 + 105033225.

It is an arithmetic number, because the mean of its divisors is an integer number (105033225).

Almost surely, 2^210066449 is an apocalyptic number.

It is an amenable number.

210066449 is a deficient number, since it is larger than the sum of its proper divisors (1).

210066449 is an equidigital number, since it uses as much as digits as its factorization.

210066449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 210066449 is about 14493.6692731689. The cubic root of 210066449 is about 594.4548819459.

The spelling of 210066449 in words is "two hundred ten million, sixty-six thousand, four hundred forty-nine".