441345421 has 16 divisors (see below), whose sum is σ = 497502720. Its totient is φ = 388044720.

The previous prime is 441345409. The next prime is 441345439. The reversal of 441345421 is 124543144.

It is a cyclic number.

It is not a de Polignac number, because 441345421 - 2¹⁷ = 441214349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 441345421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441345491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44190 + ... + 53248.

It is an arithmetic number, because the mean of its divisors is an integer number (31093920).

Almost surely, 2^441345421 is an apocalyptic number.

It is an amenable number.

441345421 is a deficient number, since it is larger than the sum of its proper divisors (56157299).

441345421 is a wasteful number, since it uses less digits than its factorization.

441345421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9216.

The product of its digits is 7680, while the sum is 28.

The square root of 441345421 is about 21008.2226996955. Note that the first 3 decimals coincide. The cubic root of 441345421 is about 761.3649415212.

Adding to 441345421 its reverse (124543144), we get a palindrome (565888565).

The spelling of 441345421 in words is "four hundred forty-one million, three hundred forty-five thousand, four hundred twenty-one".