843481 has 4 divisors (see below), whose sum is σ = 851472. Its totient is φ = 835492.

The previous prime is 843473. The next prime is 843487. The reversal of 843481 is 184348.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 843481 - 2³ = 843473 is a prime.

It is a super-2 number, since 2×843481² = 1422920394722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (843487) 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 3 ways as a sum of consecutive naturals, for example, 3835 + ... + 4048.

It is an arithmetic number, because the mean of its divisors is an integer number (212868).

2⁸⁴³⁴⁸¹ is an apocalyptic number.

It is an amenable number.

843481 is a deficient number, since it is larger than the sum of its proper divisors (7991).

843481 is a wasteful number, since it uses less digits than its factorization.

843481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7990.

The product of its digits is 3072, while the sum is 28.

The square root of 843481 is about 918.4122168177. The cubic root of 843481 is about 94.4840356373.

It can be divided in two parts, 8434 and 81, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 843481 in words is "eight hundred forty-three thousand, four hundred eighty-one".