821444483 has 4 divisors (see below), whose sum is σ = 834910848. Its totient is φ = 807978120.

The previous prime is 821444453. The next prime is 821444489. The reversal of 821444483 is 384444128.

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

It is a cyclic number.

It is not a de Polignac number, because 821444483 - 2²⁶ = 754335619 is a prime.

It is a super-2 number, since 2×821444483² = 1349542077302274578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (821444489) 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 3 ways as a sum of consecutive naturals, for example, 6733091 + ... + 6733212.

It is an arithmetic number, because the mean of its divisors is an integer number (208727712).

Almost surely, 2^821444483 is an apocalyptic number.

821444483 is a deficient number, since it is larger than the sum of its proper divisors (13466365).

821444483 is a wasteful number, since it uses less digits than its factorization.

821444483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13466364.

The product of its digits is 98304, while the sum is 38.

The square root of 821444483 is about 28660.8527961050. The cubic root of 821444483 is about 936.5394422988.

The spelling of 821444483 in words is "eight hundred twenty-one million, four hundred forty-four thousand, four hundred eighty-three".