440344140 has 96 divisors (see below), whose sum is σ = 1278063360. Its totient is φ = 113208576.

The previous prime is 440344139. The next prime is 440344147. The reversal of 440344140 is 41443044.

It is a self number, because there is not a number n which added to its sum of digits gives 440344140.

It is not an unprimeable number, because it can be changed into a prime (440344147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186447 + ... + 188793.

It is an arithmetic number, because the mean of its divisors is an integer number (13313160).

Almost surely, 2^440344140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440344140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (639031680).

440344140 is an abundant number, since it is smaller than the sum of its proper divisors (837719220).

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

440344140 is a wasteful number, since it uses less digits than its factorization.

440344140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2471 (or 2469 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 440344140 is about 20984.3784754279. The cubic root of 440344140 is about 760.7887356374.

Adding to 440344140 its reverse (41443044), we get a palindrome (481787184).

The spelling of 440344140 in words is "four hundred forty million, three hundred forty-four thousand, one hundred forty".