440664420466 has 16 divisors (see below), whose sum is σ = 700351437240. Its totient is φ = 207231447040.

The previous prime is 440664420461. The next prime is 440664420479. The reversal of 440664420466 is 664024466044.

It can be written as a sum of positive squares in 4 ways, for example, as 345945125241 + 94719295225 = 588171^2 + 307765^2 .

It is not an unprimeable number, because it can be changed into a prime (440664420461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4325311 + ... + 4426018.

Almost surely, 2^440664420466 is an apocalyptic number.

440664420466 is a deficient number, since it is larger than the sum of its proper divisors (259687016774).

440664420466 is a wasteful number, since it uses less digits than its factorization.

440664420466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8752829.

The product of its (nonzero) digits is 2654208, while the sum is 46.

The spelling of 440664420466 in words is "four hundred forty billion, six hundred sixty-four million, four hundred twenty thousand, four hundred sixty-six".