440023660 has 48 divisors (see below), whose sum is σ = 974786400. Its totient is φ = 166385664.

The previous prime is 440023627. The next prime is 440023663. The reversal of 440023660 is 66320044.

It is not an unprimeable number, because it can be changed into a prime (440023663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 231996 + ... + 233884.

It is an arithmetic number, because the mean of its divisors is an integer number (20308050).

Almost surely, 2^440023660 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 440023660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (487393200).

440023660 is an abundant number, since it is smaller than the sum of its proper divisors (534762740).

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

440023660 is a wasteful number, since it uses less digits than its factorization.

440023660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530 (or 2528 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 440023660 is about 20976.7409289432. The cubic root of 440023660 is about 760.6041249163.

The spelling of 440023660 in words is "four hundred forty million, twenty-three thousand, six hundred sixty".