440413666 has 48 divisors (see below), whose sum is σ = 842961600. Its totient is φ = 170644320.

The previous prime is 440413663. The next prime is 440413667. The reversal of 440413666 is 666314044.

It is not an unprimeable number, because it can be changed into a prime (440413663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213496 + ... + 215548.

It is an arithmetic number, because the mean of its divisors is an integer number (17561700).

Almost surely, 2^440413666 is an apocalyptic number.

440413666 is a deficient number, since it is larger than the sum of its proper divisors (402547934).

440413666 is a wasteful number, since it uses less digits than its factorization.

440413666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279 (or 2272 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 440413666 is about 20986.0350233197. The cubic root of 440413666 is about 760.8287738781.

The spelling of 440413666 in words is "four hundred forty million, four hundred thirteen thousand, six hundred sixty-six".