843401 has 4 divisors (see below), whose sum is σ = 908292. Its totient is φ = 778512.

The previous prime is 843397. The next prime is 843443. The reversal of 843401 is 104348.

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 524176 + 319225 = 724^2 + 565^2 .

It is a cyclic number.

It is not a de Polignac number, because 843401 - 2² = 843397 is a prime.

It is a super-2 number, since 2×843401² = 1422650493602, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 843401.

It is not an unprimeable number, because it can be changed into a prime (843461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32426 + ... + 32451.

It is an arithmetic number, because the mean of its divisors is an integer number (227073).

2⁸⁴³⁴⁰¹ is an apocalyptic number.

It is an amenable number.

843401 is a deficient number, since it is larger than the sum of its proper divisors (64891).

843401 is a wasteful number, since it uses less digits than its factorization.

843401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64890.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 843401 is about 918.3686623573. The cubic root of 843401 is about 94.4810484284.

Adding to 843401 its reverse (104348), we get a palindrome (947749).

The spelling of 843401 in words is "eight hundred forty-three thousand, four hundred one".