445346609 has 2 divisors, whose sum is σ = 445346610. Its totient is φ = 445346608.

The previous prime is 445346599. The next prime is 445346639. The reversal of 445346609 is 906643544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 445336609 + 10000 = 21103^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 445346609 - 2²⁸ = 176911153 is a prime.

It is not a weakly prime, because it can be changed into another prime (445346639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222673304 + 222673305.

It is an arithmetic number, because the mean of its divisors is an integer number (222673305).

Almost surely, 2^445346609 is an apocalyptic number.

It is an amenable number.

445346609 is a deficient number, since it is larger than the sum of its proper divisors (1).

445346609 is an equidigital number, since it uses as much as digits as its factorization.

445346609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 41.

The square root of 445346609 is about 21103.2369318074. The cubic root of 445346609 is about 763.6588396888.

The spelling of 445346609 in words is "four hundred forty-five million, three hundred forty-six thousand, six hundred nine".