2943993 has 32 divisors (see below), whose sum is σ = 4636800. Its totient is φ = 1645056.

The previous prime is 2943971. The next prime is 2944003. The reversal of 2943993 is 3993492.

It is not a de Polignac number, because 2943993 - 2⁵ = 2943961 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2945993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21421 + ... + 21557.

It is an arithmetic number, because the mean of its divisors is an integer number (144900).

2^2943993 is an apocalyptic number.

It is an amenable number.

2943993 is a deficient number, since it is larger than the sum of its proper divisors (1692807).

2943993 is a wasteful number, since it uses less digits than its factorization.

2943993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201.

The product of its digits is 52488, while the sum is 39.

The square root of 2943993 is about 1715.8068073067. The cubic root of 2943993 is about 143.3218012475.

The spelling of 2943993 in words is "two million, nine hundred forty-three thousand, nine hundred ninety-three".