441664812 has 60 divisors (see below), whose sum is σ = 1191871296. Its totient is φ = 142469280.

The previous prime is 441664793. The next prime is 441664813. The reversal of 441664812 is 218466144.

It is a happy number.

441664812 is a `hidden beast` number, since 4 + 4 + 1 + 6 + 648 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (441664813) by changing a digit.

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 in 19 ways as a sum of consecutive naturals, for example, 11943 + ... + 32030.

Almost surely, 2^441664812 is an apocalyptic number.

It is an amenable number.

441664812 is an abundant number, since it is smaller than the sum of its proper divisors (750206484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

441664812 is a wasteful number, since it uses less digits than its factorization.

441664812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44020 (or 44009 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 441664812 is about 21015.8228960943. The cubic root of 441664812 is about 761.5485576962.

The spelling of 441664812 in words is "four hundred forty-one million, six hundred sixty-four thousand, eight hundred twelve".