445041217 has 8 divisors (see below), whose sum is σ = 457414056. Its totient is φ = 432686592.

The previous prime is 445041211. The next prime is 445041229. The reversal of 445041217 is 712140544.

It is a Cunningham number, because it is equal to 21096²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 134189056 + 310852161 = 11584^2 + 17631^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 445041217 - 2⁷ = 445041089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445041211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55953 + ... + 63409.

It is an arithmetic number, because the mean of its divisors is an integer number (57176757).

Almost surely, 2^445041217 is an apocalyptic number.

It is an amenable number.

445041217 is a deficient number, since it is larger than the sum of its proper divisors (12372839).

445041217 is a wasteful number, since it uses less digits than its factorization.

445041217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9107.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 445041217 is about 21096.0000237012. Note that the first 4 decimals coincide. The cubic root of 445041217 is about 763.4842426264.

The spelling of 445041217 in words is "four hundred forty-five million, forty-one thousand, two hundred seventeen".