440140545 has 48 divisors (see below), whose sum is σ = 826534800. Its totient is φ = 215382528.

The previous prime is 440140543. The next prime is 440140549. The reversal of 440140545 is 545041044.

It can be written as a sum of positive squares in 8 ways, for example, as 49999041 + 390141504 = 7071^2 + 19752^2 .

It is not a de Polignac number, because 440140545 - 2¹ = 440140543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (440140543) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 99031 + ... + 103379.

It is an arithmetic number, because the mean of its divisors is an integer number (17219475).

Almost surely, 2^440140545 is an apocalyptic number.

440140545 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

440140545 is a deficient number, since it is larger than the sum of its proper divisors (386394255).

440140545 is a wasteful number, since it uses less digits than its factorization.

440140545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4546 (or 4543 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 440140545 is about 20979.5268059125. The cubic root of 440140545 is about 760.6714662515.

Adding to 440140545 its reverse (545041044), we get a palindrome (985181589).

The spelling of 440140545 in words is "four hundred forty million, one hundred forty thousand, five hundred forty-five".