445336609 has 9 divisors (see below), whose sum is σ = 456029107. Its totient is φ = 434890624.

The previous prime is 445336597. The next prime is 445336621. The reversal of 445336609 is 906633544.

The square root of 445336609 is 21103.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (445336597) and next prime (445336621).

It can be written as a sum of positive squares in only one way, i.e., 272151009 + 173185600 = 16497^2 + 13160^2 .

It is not a de Polignac number, because 445336609 - 2⁷ = 445336481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445336009) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 991617 + ... + 992065.

Almost surely, 2^445336609 is an apocalyptic number.

445336609 is the 21103-rd square number.

445336609 is the 10552-nd centered octagonal number.

It is an amenable number.

445336609 is a deficient number, since it is larger than the sum of its proper divisors (10692498).

445336609 is an frugal number, since it uses more digits than its factorization.

445336609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 40.

The cubic root of 445336609 is about 763.6531238071.

The spelling of 445336609 in words is "four hundred forty-five million, three hundred thirty-six thousand, six hundred nine".