441000421 has 4 divisors (see below), whose sum is σ = 441144844. Its totient is φ = 440856000.

The previous prime is 441000409. The next prime is 441000481. The reversal of 441000421 is 124000144.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 195608196 + 245392225 = 13986^2 + 15665^2 .

It is a cyclic number.

It is not a de Polignac number, because 441000421 - 2¹⁷ = 440869349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 441000395 and 441000404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441000401) 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 3 ways as a sum of consecutive naturals, for example, 67530 + ... + 73771.

It is an arithmetic number, because the mean of its divisors is an integer number (110286211).

Almost surely, 2^441000421 is an apocalyptic number.

It is an amenable number.

441000421 is a deficient number, since it is larger than the sum of its proper divisors (144423).

441000421 is a wasteful number, since it uses less digits than its factorization.

441000421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144422.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 441000421 is about 21000.0100238071. The cubic root of 441000421 is about 761.1665033174.

Adding to 441000421 its reverse (124000144), we get a palindrome (565000565).

The spelling of 441000421 in words is "four hundred forty-one million, four hundred twenty-one", and thus it is an aban number.