440406660 has 48 divisors (see below), whose sum is σ = 1234094400. Its totient is φ = 117350784.

The previous prime is 440406649. The next prime is 440406661. The reversal of 440406660 is 66604044.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (440406661) 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, 116886 + ... + 120594.

It is an arithmetic number, because the mean of its divisors is an integer number (25710300).

Almost surely, 2^440406660 is an apocalyptic number.

It is an amenable number.

440406660 is an abundant number, since it is smaller than the sum of its proper divisors (793687740).

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

440406660 is a wasteful number, since it uses less digits than its factorization.

440406660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5700 (or 5698 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 440406660 is about 20985.8681021301. The cubic root of 440406660 is about 760.8247394932.

The spelling of 440406660 in words is "four hundred forty million, four hundred six thousand, six hundred sixty".