445040505 has 96 divisors (see below), whose sum is σ = 956067840. Its totient is φ = 186485760.

The previous prime is 445040503. The next prime is 445040513. The reversal of 445040505 is 505040544.

It is not a de Polignac number, because 445040505 - 2¹ = 445040503 is a prime.

It is a super-2 number, since 2×445040505² = 396122102181310050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (445040503) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 781861 + ... + 782429.

It is an arithmetic number, because the mean of its divisors is an integer number (9959040).

Almost surely, 2^445040505 is an apocalyptic number.

445040505 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

445040505 is an abundant number, since it is smaller than the sum of its proper divisors (511027335).

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

445040505 is a wasteful number, since it uses less digits than its factorization.

445040505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791 (or 788 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 445040505 is about 21095.9831484574. The cubic root of 445040505 is about 763.4838354723.

The spelling of 445040505 in words is "four hundred forty-five million, forty thousand, five hundred five".