440661806 has 32 divisors (see below), whose sum is σ = 724405248. Its totient is φ = 199825920.

The previous prime is 440661803. The next prime is 440661829. The reversal of 440661806 is 608166044.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440661803) 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 15 ways as a sum of consecutive naturals, for example, 372536 + ... + 373716.

It is an arithmetic number, because the mean of its divisors is an integer number (22637664).

Almost surely, 2^440661806 is an apocalyptic number.

440661806 is a deficient number, since it is larger than the sum of its proper divisors (283743442).

440661806 is a wasteful number, since it uses less digits than its factorization.

440661806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 440661806 is about 20991.9462175378. The cubic root of 440661806 is about 760.9716369944.

The spelling of 440661806 in words is "four hundred forty million, six hundred sixty-one thousand, eight hundred six".