445664904 has 32 divisors (see below), whose sum is σ = 1137870720. Its totient is φ = 145393856.

The previous prime is 445664903. The next prime is 445664993. The reversal of 445664904 is 409466544.

It is not an unprimeable number, because it can be changed into a prime (445664903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196419 + ... + 198674.

It is an arithmetic number, because the mean of its divisors is an integer number (35558460).

Almost surely, 2^445664904 is an apocalyptic number.

It is an amenable number.

445664904 is an abundant number, since it is smaller than the sum of its proper divisors (692205816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445664904 is a wasteful number, since it uses less digits than its factorization.

445664904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395149 (or 395145 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The square root of 445664904 is about 21110.7769634374. The cubic root of 445664904 is about 763.8407286567.

The spelling of 445664904 in words is "four hundred forty-five million, six hundred sixty-four thousand, nine hundred four".