443481481 has 3 divisors (see below), whose sum is σ = 443502541. Its totient is φ = 443460422.

The previous prime is 443481463. The next prime is 443481487. The reversal of 443481481 is 184184344.

It is a happy number.

The square root of 443481481 is 21059.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 443481481 - 2⁵ = 443481449 is a prime.

It is a super-2 number, since 2×443481481² = 393351647979906722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 443481481.

It is not an unprimeable number, because it can be changed into a prime (443481487) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 10530 + ... + 31588.

Almost surely, 2^443481481 is an apocalyptic number.

443481481 is the 21059-th square number.

443481481 is the 10530-th centered octagonal number.

It is an amenable number.

443481481 is a deficient number, since it is larger than the sum of its proper divisors (21060).

443481481 is an frugal number, since it uses more digits than its factorization.

443481481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42118 (or 21059 counting only the distinct ones).

The product of its digits is 49152, while the sum is 37.

The cubic root of 443481481 is about 762.5912708446.

The spelling of 443481481 in words is "four hundred forty-three million, four hundred eighty-one thousand, four hundred eighty-one".