2003943 has 8 divisors (see below), whose sum is σ = 2829168. Its totient is φ = 1257344.

The previous prime is 2003927. The next prime is 2003951. The reversal of 2003943 is 3493002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2003943 - 2⁴ = 2003927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2004943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19596 + ... + 19697.

It is an arithmetic number, because the mean of its divisors is an integer number (353646).

2^2003943 is an apocalyptic number.

2003943 is a deficient number, since it is larger than the sum of its proper divisors (825225).

2003943 is a wasteful number, since it uses less digits than its factorization.

2003943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39313.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 2003943 is about 1415.6069369709. The cubic root of 2003943 is about 126.0748484487.

Adding to 2003943 its reverse (3493002), we get a palindrome (5496945).

The spelling of 2003943 in words is "two million, three thousand, nine hundred forty-three".