445398688 has 48 divisors (see below), whose sum is σ = 1012120704. Its totient is φ = 188985600.

The previous prime is 445398661. The next prime is 445398721. The reversal of 445398688 is 886893544.

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 in 7 ways as a sum of consecutive naturals, for example, 12781 + ... + 32467.

It is an arithmetic number, because the mean of its divisors is an integer number (21085848).

Almost surely, 2^445398688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445398688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506060352).

445398688 is an abundant number, since it is smaller than the sum of its proper divisors (566722016).

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

445398688 is a wasteful number, since it uses less digits than its factorization.

445398688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19805 (or 19797 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 55.

The square root of 445398688 is about 21104.4708059691. The cubic root of 445398688 is about 763.6886060459.

The spelling of 445398688 in words is "four hundred forty-five million, three hundred ninety-eight thousand, six hundred eighty-eight".