445343609 has 2 divisors, whose sum is σ = 445343610. Its totient is φ = 445343608.

The previous prime is 445343557. The next prime is 445343627. The reversal of 445343609 is 906343544.

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., 435640384 + 9703225 = 20872^2 + 3115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445343609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (445343009) 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, 222671804 + 222671805.

It is an arithmetic number, because the mean of its divisors is an integer number (222671805).

Almost surely, 2^445343609 is an apocalyptic number.

It is an amenable number.

445343609 is a deficient number, since it is larger than the sum of its proper divisors (1).

445343609 is an equidigital number, since it uses as much as digits as its factorization.

445343609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 445343609 is about 21103.1658525445. The cubic root of 445343609 is about 763.6571249333.

The spelling of 445343609 in words is "four hundred forty-five million, three hundred forty-three thousand, six hundred nine".