440007140 has 24 divisors (see below), whose sum is σ = 955878840. Its totient is φ = 169933568.

The previous prime is 440007133. The next prime is 440007143. The reversal of 440007140 is 41700044.

It can be written as a sum of positive squares in 4 ways, for example, as 937024 + 439070116 = 968^2 + 20954^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (440007143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378737 + ... + 379896.

It is an arithmetic number, because the mean of its divisors is an integer number (39828285).

Almost surely, 2^440007140 is an apocalyptic number.

It is an amenable number.

440007140 is an abundant number, since it is smaller than the sum of its proper divisors (515871700).

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

440007140 is a wasteful number, since it uses less digits than its factorization.

440007140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758671 (or 758669 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 440007140 is about 20976.3471557848. The cubic root of 440007140 is about 760.5946062331.

Adding to 440007140 its reverse (41700044), we get a palindrome (481707184).

The spelling of 440007140 in words is "four hundred forty million, seven thousand, one hundred forty".