441439861 has 4 divisors (see below), whose sum is σ = 441488224. Its totient is φ = 441391500.

The previous prime is 441439847. The next prime is 441439877. The reversal of 441439861 is 168934144.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 441439861 - 2¹¹ = 441437813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441439261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5865 + ... + 30286.

It is an arithmetic number, because the mean of its divisors is an integer number (110372056).

Almost surely, 2^441439861 is an apocalyptic number.

It is an amenable number.

441439861 is a deficient number, since it is larger than the sum of its proper divisors (48363).

441439861 is a wasteful number, since it uses less digits than its factorization.

441439861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48362.

The product of its digits is 82944, while the sum is 40.

The square root of 441439861 is about 21010.4702707959. The cubic root of 441439861 is about 761.4192437930.

The spelling of 441439861 in words is "four hundred forty-one million, four hundred thirty-nine thousand, eight hundred sixty-one".