441389421 has 24 divisors (see below), whose sum is σ = 696818304. Its totient is φ = 267010560.

The previous prime is 441389401. The next prime is 441389447. The reversal of 441389421 is 124983144.

It is a happy number.

It is not a de Polignac number, because 441389421 - 2⁷ = 441389293 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (441389401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53260 + ... + 60986.

It is an arithmetic number, because the mean of its divisors is an integer number (29034096).

Almost surely, 2^441389421 is an apocalyptic number.

It is an amenable number.

441389421 is a deficient number, since it is larger than the sum of its proper divisors (255428883).

441389421 is a wasteful number, since it uses less digits than its factorization.

441389421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8321 (or 8318 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 441389421 is about 21009.2698826018. The cubic root of 441389421 is about 761.3902421457.

The spelling of 441389421 in words is "four hundred forty-one million, three hundred eighty-nine thousand, four hundred twenty-one".