446490664 has 8 divisors (see below), whose sum is σ = 837170010. Its totient is φ = 223245328.

The previous prime is 446490631. The next prime is 446490691. The reversal of 446490664 is 466094644.

It can be written as a sum of positive squares in only one way, i.e., 442765764 + 3724900 = 21042^2 + 1930^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 446490664.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27905659 + ... + 27905674.

Almost surely, 2^446490664 is an apocalyptic number.

It is an amenable number.

446490664 is a deficient number, since it is larger than the sum of its proper divisors (390679346).

446490664 is a wasteful number, since it uses less digits than its factorization.

446490664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55811339 (or 55811335 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 43.

The square root of 446490664 is about 21130.3256955495. The cubic root of 446490664 is about 764.3122039357.

The spelling of 446490664 in words is "four hundred forty-six million, four hundred ninety thousand, six hundred sixty-four".