6944389 has 4 divisors (see below), whose sum is σ = 6951724. Its totient is φ = 6937056.

The previous prime is 6944387. The next prime is 6944429. The reversal of 6944389 is 9834496.

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 can be written as a sum of positive squares in 2 ways, for example, as 2356225 + 4588164 = 1535^2 + 2142^2 .

It is a cyclic number.

It is not a de Polignac number, because 6944389 - 2¹ = 6944387 is a prime.

It is a d-powerful number, because it can be written as 6⁶ + 9³ + 4⁴ + 4⁷ + 3⁵ + 8⁷ + 9⁷ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6944387) 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, 1992 + ... + 4225.

It is an arithmetic number, because the mean of its divisors is an integer number (1737931).

Almost surely, 2^6944389 is an apocalyptic number.

It is an amenable number.

6944389 is a deficient number, since it is larger than the sum of its proper divisors (7335).

6944389 is a wasteful number, since it uses less digits than its factorization.

6944389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7334.

The product of its digits is 186624, while the sum is 43.

The square root of 6944389 is about 2635.2208636090. The cubic root of 6944389 is about 190.7851993465.

The spelling of 6944389 in words is "six million, nine hundred forty-four thousand, three hundred eighty-nine".