440243505 has 40 divisors (see below), whose sum is σ = 849893352. Its totient is φ = 216732672.

The previous prime is 440243477. The next prime is 440243539. The reversal of 440243505 is 505342044.

It can be written as a sum of positive squares in 4 ways, for example, as 27625536 + 412617969 = 5256^2 + 20313^2 .

It is not a de Polignac number, because 440243505 - 2⁹ = 440242993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 36544 + ... + 47073.

Almost surely, 2^440243505 is an apocalyptic number.

440243505 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

440243505 is a deficient number, since it is larger than the sum of its proper divisors (409649847).

440243505 is a wasteful number, since it uses less digits than its factorization.

440243505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83647 (or 83638 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 440243505 is about 20981.9804832623. The cubic root of 440243505 is about 760.7307750556.

Adding to 440243505 its reverse (505342044), we get a palindrome (945585549).

The spelling of 440243505 in words is "four hundred forty million, two hundred forty-three thousand, five hundred five".