445650169 has 2 divisors, whose sum is σ = 445650170. Its totient is φ = 445650168.

The previous prime is 445650143. The next prime is 445650217. The reversal of 445650169 is 961056544.

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., 411602944 + 34047225 = 20288^2 + 5835^2 .

It is a cyclic number.

It is not a de Polignac number, because 445650169 - 2⁵ = 445650137 is a prime.

It is a super-2 number, since 2×445650169² = 397208146259457122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (445650119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222825084 + 222825085.

It is an arithmetic number, because the mean of its divisors is an integer number (222825085).

Almost surely, 2^445650169 is an apocalyptic number.

It is an amenable number.

445650169 is a deficient number, since it is larger than the sum of its proper divisors (1).

445650169 is an equidigital number, since it uses as much as digits as its factorization.

445650169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 445650169 is about 21110.4279681867. The cubic root of 445650169 is about 763.8323102860.

The spelling of 445650169 in words is "four hundred forty-five million, six hundred fifty thousand, one hundred sixty-nine".