445045609 has 2 divisors, whose sum is σ = 445045610. Its totient is φ = 445045608.

The previous prime is 445045591. The next prime is 445045621. The reversal of 445045609 is 906540544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 297666009 + 147379600 = 17253^2 + 12140^2 .

It is a cyclic number.

It is not a de Polignac number, because 445045609 - 2¹⁷ = 444914537 is a prime.

It is not a weakly prime, because it can be changed into another prime (445045309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222522804 + 222522805.

It is an arithmetic number, because the mean of its divisors is an integer number (222522805).

Almost surely, 2^445045609 is an apocalyptic number.

It is an amenable number.

445045609 is a deficient number, since it is larger than the sum of its proper divisors (1).

445045609 is an equidigital number, since it uses as much as digits as its factorization.

445045609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 445045609 is about 21096.1041190074. The cubic root of 445045609 is about 763.4867541629.

The spelling of 445045609 in words is "four hundred forty-five million, forty-five thousand, six hundred nine".