2043993 has 16 divisors (see below), whose sum is σ = 3142656. Its totient is φ = 1157520.

The previous prime is 2043989. The next prime is 2043997. The reversal of 2043993 is 3993402.

It is an interprime number because it is at equal distance from previous prime (2043989) and next prime (2043997).

It is not a de Polignac number, because 2043993 - 2² = 2043989 is a prime.

2043993 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2043993.

It is not an unprimeable number, because it can be changed into a prime (2043997) 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 15 ways as a sum of consecutive naturals, for example, 2380 + ... + 3122.

It is an arithmetic number, because the mean of its divisors is an integer number (196416).

2^2043993 is an apocalyptic number.

It is an amenable number.

2043993 is a deficient number, since it is larger than the sum of its proper divisors (1098663).

2043993 is a wasteful number, since it uses less digits than its factorization.

2043993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 2043993 is about 1429.6828319596. The cubic root of 2043993 is about 126.9092082607.

It can be divided in two parts, 204399 and 3, that added together give a palindrome (204402).

The spelling of 2043993 in words is "two million, forty-three thousand, nine hundred ninety-three".