821444041 has 8 divisors (see below), whose sum is σ = 897624000. Its totient is φ = 745514640.

The previous prime is 821444033. The next prime is 821444047. The reversal of 821444041 is 140444128.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 821444041 - 2³ = 821444033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (821444047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55746 + ... + 68923.

It is an arithmetic number, because the mean of its divisors is an integer number (112203000).

Almost surely, 2^821444041 is an apocalyptic number.

It is an amenable number.

821444041 is a deficient number, since it is larger than the sum of its proper divisors (76179959).

821444041 is a wasteful number, since it uses less digits than its factorization.

821444041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125279.

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 821444041 is about 28660.8450852378. The cubic root of 821444041 is about 936.5392743221.

Adding to 821444041 its reverse (140444128), we get a palindrome (961888169).

The spelling of 821444041 in words is "eight hundred twenty-one million, four hundred forty-four thousand, forty-one".