2043947 has 4 divisors (see below), whose sum is σ = 2049720. Its totient is φ = 2038176.

The previous prime is 2043931. The next prime is 2043953. The reversal of 2043947 is 7493402.

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 2043947 - 2⁴ = 2043931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2043907) 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, 2318 + ... + 3075.

It is an arithmetic number, because the mean of its divisors is an integer number (512430).

2^2043947 is an apocalyptic number.

2043947 is a deficient number, since it is larger than the sum of its proper divisors (5773).

2043947 is an equidigital number, since it uses as much as digits as its factorization.

2043947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5772.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 2043947 is about 1429.6667443849. Note that the first 3 decimals coincide. The cubic root of 2043947 is about 126.9082562243.

The spelling of 2043947 in words is "two million, forty-three thousand, nine hundred forty-seven".