6944021 has 16 divisors (see below), whose sum is σ = 8332800. Its totient is φ = 5660928.

The previous prime is 6944017. The next prime is 6944051. The reversal of 6944021 is 1204496.

It is not a de Polignac number, because 6944021 - 2² = 6944017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6944011) 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 15 ways as a sum of consecutive naturals, for example, 15821 + ... + 16253.

It is an arithmetic number, because the mean of its divisors is an integer number (520800).

Almost surely, 2^6944021 is an apocalyptic number.

It is an amenable number.

6944021 is a deficient number, since it is larger than the sum of its proper divisors (1388779).

6944021 is a wasteful number, since it uses less digits than its factorization.

6944021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 6944021 is about 2635.1510393144. The cubic root of 6944021 is about 190.7818292303.

The spelling of 6944021 in words is "six million, nine hundred forty-four thousand, twenty-one".