446666644 has 24 divisors (see below), whose sum is σ = 798560000. Its totient is φ = 218544480.

The previous prime is 446666617. The next prime is 446666651.

446666644 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×446666644² = 399022181724445472, which contains 22 as substring.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 446666594 and 446666603.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 43957 + ... + 53155.

Almost surely, 2^446666644 is an apocalyptic number.

It is an amenable number.

446666644 is a deficient number, since it is larger than the sum of its proper divisors (351893356).

446666644 is a wasteful number, since it uses less digits than its factorization.

446666644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9463 (or 9461 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 46.

The square root of 446666644 is about 21134.4894426149. The cubic root of 446666644 is about 764.4126061802.

The spelling of 446666644 in words is "four hundred forty-six million, six hundred sixty-six thousand, six hundred forty-four".