844425481 has 3 divisors (see below), whose sum is σ = 844454541. Its totient is φ = 844396422.

The previous prime is 844425467. The next prime is 844425487. The reversal of 844425481 is 184524448.

The square root of 844425481 is 29059.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 844425481 - 2⁷ = 844425353 is a prime.

It is a super-2 number, since 2×844425481² = 1426108785924162722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (844425487) 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 2 ways as a sum of consecutive naturals, for example, 14530 + ... + 43588.

It is an arithmetic number, because the mean of its divisors is an integer number (281484847).

Almost surely, 2^844425481 is an apocalyptic number.

844425481 is the 29059-th square number.

844425481 is the 14530-th centered octagonal number.

It is an amenable number.

844425481 is a deficient number, since it is larger than the sum of its proper divisors (29060).

844425481 is an frugal number, since it uses more digits than its factorization.

844425481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58118 (or 29059 counting only the distinct ones).

The product of its digits is 163840, while the sum is 40.

The cubic root of 844425481 is about 945.1928839315.

The spelling of 844425481 in words is "eight hundred forty-four million, four hundred twenty-five thousand, four hundred eighty-one".