6442903 has 4 divisors (see below), whose sum is σ = 6448720. Its totient is φ = 6437088.

The previous prime is 6442897. The next prime is 6442937. The reversal of 6442903 is 3092446.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6442903 - 2⁵ = 6442871 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 13.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 675 + ... + 3652.

It is an arithmetic number, because the mean of its divisors is an integer number (1612180).

Almost surely, 2^6442903 is an apocalyptic number.

6442903 is a deficient number, since it is larger than the sum of its proper divisors (5817).

6442903 is a wasteful number, since it uses less digits than its factorization.

6442903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5816.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 6442903 is about 2538.2874147740. The cubic root of 6442903 is about 186.0775007514.

The spelling of 6442903 in words is "six million, four hundred forty-two thousand, nine hundred three".