445405004 has 24 divisors (see below), whose sum is σ = 866366928. Its totient is φ = 198635840.

The previous prime is 445405003. The next prime is 445405007. The reversal of 445405004 is 400504544.

It is not an unprimeable number, because it can be changed into a prime (445405003) 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, 93167 + ... + 97830.

It is an arithmetic number, because the mean of its divisors is an integer number (36098622).

Almost surely, 2^445405004 is an apocalyptic number.

445405004 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

445405004 is a deficient number, since it is larger than the sum of its proper divisors (420961924).

445405004 is a wasteful number, since it uses less digits than its factorization.

445405004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191065 (or 191063 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 445405004 is about 21104.6204419791. The cubic root of 445405004 is about 763.6922158712.

Adding to 445405004 its reverse (400504544), we get a palindrome (845909548).

The spelling of 445405004 in words is "four hundred forty-five million, four hundred five thousand, four".