406843 has 4 divisors (see below), whose sum is σ = 416808. Its totient is φ = 396880.

The previous prime is 406837. The next prime is 406859. The reversal of 406843 is 348604.

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

It is not a de Polignac number, because 406843 - 2⁵ = 406811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406873) 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, 4921 + ... + 5002.

It is an arithmetic number, because the mean of its divisors is an integer number (104202).

2⁴⁰⁶⁸⁴³ is an apocalyptic number.

406843 is a deficient number, since it is larger than the sum of its proper divisors (9965).

406843 is an equidigital number, since it uses as much as digits as its factorization.

406843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9964.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 406843 is about 637.8424570378. The cubic root of 406843 is about 74.0984202965.

The spelling of 406843 in words is "four hundred six thousand, eight hundred forty-three".