6989443 has 2 divisors, whose sum is σ = 6989444. Its totient is φ = 6989442.

The previous prime is 6989429. The next prime is 6989449. The reversal of 6989443 is 3449896.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6989443 - 2⁹ = 6988931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6989443.

It is not a weakly prime, because it can be changed into another prime (6989449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3494721 + 3494722.

It is an arithmetic number, because the mean of its divisors is an integer number (3494722).

Almost surely, 2^6989443 is an apocalyptic number.

6989443 is a deficient number, since it is larger than the sum of its proper divisors (1).

6989443 is an equidigital number, since it uses as much as digits as its factorization.

6989443 is an odious number, because the sum of its binary digits is odd.

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

The square root of 6989443 is about 2643.7554728076. The cubic root of 6989443 is about 191.1969041095.

The spelling of 6989443 in words is "six million, nine hundred eighty-nine thousand, four hundred forty-three".