445223889 has 48 divisors (see below), whose sum is σ = 719881344. Its totient is φ = 262886400.

The previous prime is 445223887. The next prime is 445223893. The reversal of 445223889 is 988322544.

445223889 is a `hidden beast` number, since 44 + 522 + 3 + 8 + 89 = 666.

It is not a de Polignac number, because 445223889 - 2¹ = 445223887 is a prime.

It is a super-2 number, since 2×445223889² = 396448622672568642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (445223887) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 681487 + ... + 682139.

It is an arithmetic number, because the mean of its divisors is an integer number (14997528).

Almost surely, 2^445223889 is an apocalyptic number.

It is an amenable number.

445223889 is a deficient number, since it is larger than the sum of its proper divisors (274657455).

445223889 is a wasteful number, since it uses less digits than its factorization.

445223889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838 (or 835 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 445223889 is about 21100.3291206559. The cubic root of 445223889 is about 763.5886884700.

The spelling of 445223889 in words is "four hundred forty-five million, two hundred twenty-three thousand, eight hundred eighty-nine".