445440478 has 24 divisors (see below), whose sum is σ = 778992552. Its totient is φ = 190474704.

The previous prime is 445440467. The next prime is 445440491. The reversal of 445440478 is 874044544.

It is a self number, because there is not a number n which added to its sum of digits gives 445440478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40900 + ... + 50632.

It is an arithmetic number, because the mean of its divisors is an integer number (32458023).

Almost surely, 2^445440478 is an apocalyptic number.

445440478 is a deficient number, since it is larger than the sum of its proper divisors (333552074).

445440478 is a wasteful number, since it uses less digits than its factorization.

445440478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10216 (or 10209 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 40.

The square root of 445440478 is about 21105.4608573232. The cubic root of 445440478 is about 763.7124899276.

The spelling of 445440478 in words is "four hundred forty-five million, four hundred forty thousand, four hundred seventy-eight".