446442664 has 8 divisors (see below), whose sum is σ = 837080010. Its totient is φ = 223221328.

The previous prime is 446442653. The next prime is 446442683. The reversal of 446442664 is 466244644.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 296184100 + 150258564 = 17210^2 + 12258^2 .

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

It is a super-2 number, since 2×446442664² = 398622104478833792, which contains 22 as substring.

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, 27902659 + ... + 27902674.

Almost surely, 2^446442664 is an apocalyptic number.

It is an amenable number.

446442664 is a deficient number, since it is larger than the sum of its proper divisors (390637346).

446442664 is a wasteful number, since it uses less digits than its factorization.

446442664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55805339 (or 55805335 counting only the distinct ones).

The product of its digits is 442368, while the sum is 40.

The square root of 446442664 is about 21129.1898566888. The cubic root of 446442664 is about 764.2848138142.

The spelling of 446442664 in words is "four hundred forty-six million, four hundred forty-two thousand, six hundred sixty-four".