441665532 has 144 divisors (see below), whose sum is σ = 1403281152. Its totient is φ = 113783040.

The previous prime is 441665509. The next prime is 441665579. The reversal of 441665532 is 235566144.

441665532 is a `hidden beast` number, since 4 + 41 + 66 + 553 + 2 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

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 47 ways as a sum of consecutive naturals, for example, 379183 + ... + 380345.

It is an arithmetic number, because the mean of its divisors is an integer number (9745008).

Almost surely, 2^441665532 is an apocalyptic number.

441665532 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 441665532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (701640576).

441665532 is an abundant number, since it is smaller than the sum of its proper divisors (961615620).

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

441665532 is a wasteful number, since it uses less digits than its factorization.

441665532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328 (or 1323 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 441665532 is about 21015.8400260375. The cubic root of 441665532 is about 761.5489715203.

The spelling of 441665532 in words is "four hundred forty-one million, six hundred sixty-five thousand, five hundred thirty-two".