445252609 has 2 divisors, whose sum is σ = 445252610. Its totient is φ = 445252608.

The previous prime is 445252589. The next prime is 445252637. The reversal of 445252609 is 906252544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 354945600 + 90307009 = 18840^2 + 9503^2 .

It is a cyclic number.

It is not a de Polignac number, because 445252609 - 2⁹ = 445252097 is a prime.

It is not a weakly prime, because it can be changed into another prime (445252679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222626304 + 222626305.

It is an arithmetic number, because the mean of its divisors is an integer number (222626305).

Almost surely, 2^445252609 is an apocalyptic number.

It is an amenable number.

445252609 is a deficient number, since it is larger than the sum of its proper divisors (1).

445252609 is an equidigital number, since it uses as much as digits as its factorization.

445252609 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 445252609 is about 21101.0096677860. The cubic root of 445252609 is about 763.6051070226.

The spelling of 445252609 in words is "four hundred forty-five million, two hundred fifty-two thousand, six hundred nine".