6442943 has 4 divisors (see below), whose sum is σ = 6938568. Its totient is φ = 5947320.

The previous prime is 6442939. The next prime is 6442979. The reversal of 6442943 is 3492446.

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 6442943 - 2² = 6442939 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6442993) 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, 247793 + ... + 247818.

It is an arithmetic number, because the mean of its divisors is an integer number (1734642).

Almost surely, 2^6442943 is an apocalyptic number.

6442943 is a deficient number, since it is larger than the sum of its proper divisors (495625).

6442943 is a wasteful number, since it uses less digits than its factorization.

6442943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495624.

The product of its digits is 20736, while the sum is 32.

The square root of 6442943 is about 2538.2952940901. The cubic root of 6442943 is about 186.0778858306.

The spelling of 6442943 in words is "six million, four hundred forty-two thousand, nine hundred forty-three".