445347009 has 6 divisors (see below), whose sum is σ = 643279026. Its totient is φ = 296898000.

The previous prime is 445346983. The next prime is 445347029. The reversal of 445347009 is 900743544.

It can be written as a sum of positive squares in only one way, i.e., 404130609 + 41216400 = 20103^2 + 6420^2 .

It is not a de Polignac number, because 445347009 - 2⁸ = 445346753 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (445347029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24741492 + ... + 24741509.

It is an arithmetic number, because the mean of its divisors is an integer number (107213171).

Almost surely, 2^445347009 is an apocalyptic number.

It is an amenable number.

445347009 is a deficient number, since it is larger than the sum of its proper divisors (197932017).

445347009 is a wasteful number, since it uses less digits than its factorization.

445347009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49483007 (or 49483004 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 445347009 is about 21103.2464090244. The cubic root of 445347009 is about 763.6590683223.

The spelling of 445347009 in words is "four hundred forty-five million, three hundred forty-seven thousand, nine".