1940843 has 4 divisors (see below), whose sum is σ = 1943928. Its totient is φ = 1937760.

The previous prime is 1940833. The next prime is 1940849. The reversal of 1940843 is 3480491.

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 1940843 - 2⁶ = 1940779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1940849) 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, 221 + ... + 1982.

It is an arithmetic number, because the mean of its divisors is an integer number (485982).

2^1940843 is an apocalyptic number.

1940843 is a deficient number, since it is larger than the sum of its proper divisors (3085).

1940843 is an equidigital number, since it uses as much as digits as its factorization.

1940843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3084.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1940843 is about 1393.1414142147. The cubic root of 1940843 is about 124.7374328541.

The spelling of 1940843 in words is "one million, nine hundred forty thousand, eight hundred forty-three".