401843 has 4 divisors (see below), whose sum is σ = 432768. Its totient is φ = 370920.

The previous prime is 401839. The next prime is 401861. The reversal of 401843 is 348104.

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 401843 - 2² = 401839 is a prime.

It is a super-2 number, since 2×401843² = 322955593298, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401813) 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, 15443 + ... + 15468.

It is an arithmetic number, because the mean of its divisors is an integer number (108192).

2⁴⁰¹⁸⁴³ is an apocalyptic number.

401843 is a deficient number, since it is larger than the sum of its proper divisors (30925).

401843 is a wasteful number, since it uses less digits than its factorization.

401843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30924.

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

The square root of 401843 is about 633.9108770166. The cubic root of 401843 is about 73.7936177872.

Adding to 401843 its reverse (348104), we get a palindrome (749947).

The spelling of 401843 in words is "four hundred one thousand, eight hundred forty-three".