445843226 has 4 divisors (see below), whose sum is σ = 668764842. Its totient is φ = 222921612.

The previous prime is 445843217. The next prime is 445843253. The reversal of 445843226 is 622348544.

It is a happy number.

It is a Cunningham number, because it is equal to 21115²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 445843225 + 1 = 21115^2 + 1^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 445843226.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111460805 + ... + 111460808.

Almost surely, 2^445843226 is an apocalyptic number.

445843226 is a deficient number, since it is larger than the sum of its proper divisors (222921616).

445843226 is a wasteful number, since it uses less digits than its factorization.

445843226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222921615.

The product of its digits is 184320, while the sum is 38.

The square root of 445843226 is about 21115.0000236798. Note that the first 4 decimals coincide. The cubic root of 445843226 is about 763.9425925177.

The spelling of 445843226 in words is "four hundred forty-five million, eight hundred forty-three thousand, two hundred twenty-six".