445222004 has 12 divisors (see below), whose sum is σ = 784744800. Its totient is φ = 221009208.

The previous prime is 445221991. The next prime is 445222009. The reversal of 445222004 is 400222544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445222009) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 399824 + ... + 400935.

It is an arithmetic number, because the mean of its divisors is an integer number (65395400).

Almost surely, 2^445222004 is an apocalyptic number.

It is an amenable number.

445222004 is a deficient number, since it is larger than the sum of its proper divisors (339522796).

445222004 is a wasteful number, since it uses less digits than its factorization.

445222004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800902 (or 800900 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 445222004 is about 21100.2844530589. The cubic root of 445222004 is about 763.5876108348.

Adding to 445222004 its reverse (400222544), we get a palindrome (845444548).

The spelling of 445222004 in words is "four hundred forty-five million, two hundred twenty-two thousand, four".