441404666 has 4 divisors (see below), whose sum is σ = 662107002. Its totient is φ = 220702332.

The previous prime is 441404659. The next prime is 441404681. The reversal of 441404666 is 666404144.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 402604225 + 38800441 = 20065^2 + 6229^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 110351165 + ... + 110351168.

Almost surely, 2^441404666 is an apocalyptic number.

441404666 is a deficient number, since it is larger than the sum of its proper divisors (220702336).

441404666 is a wasteful number, since it uses less digits than its factorization.

441404666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220702335.

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 441404666 is about 21009.6326955042. The cubic root of 441404666 is about 761.3990078448.

The spelling of 441404666 in words is "four hundred forty-one million, four hundred four thousand, six hundred sixty-six".