844054481 has 4 divisors (see below), whose sum is σ = 847192500. Its totient is φ = 840916464.

The previous prime is 844054459. The next prime is 844054487. The reversal of 844054481 is 184450448.

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

It can be written as a sum of positive squares in 2 ways, for example, as 129026881 + 715027600 = 11359^2 + 26740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-844054481 is a prime.

It is a super-2 number, since 2×844054481² = 1424855933792358722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (844054487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1568606 + ... + 1569143.

It is an arithmetic number, because the mean of its divisors is an integer number (211798125).

Almost surely, 2^844054481 is an apocalyptic number.

It is an amenable number.

844054481 is a deficient number, since it is larger than the sum of its proper divisors (3138019).

844054481 is a wasteful number, since it uses less digits than its factorization.

844054481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138018.

The product of its (nonzero) digits is 81920, while the sum is 38.

The square root of 844054481 is about 29052.6157342157. The cubic root of 844054481 is about 945.0544395352.

The spelling of 844054481 in words is "eight hundred forty-four million, fifty-four thousand, four hundred eighty-one".