6744389 has 2 divisors, whose sum is σ = 6744390. Its totient is φ = 6744388.

The previous prime is 6744383. The next prime is 6744403. The reversal of 6744389 is 9834476.

6744389 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5841889 + 902500 = 2417^2 + 950^2 .

It is a cyclic number.

It is not a de Polignac number, because 6744389 - 2¹⁶ = 6678853 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6744383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3372194 + 3372195.

It is an arithmetic number, because the mean of its divisors is an integer number (3372195).

Almost surely, 2^6744389 is an apocalyptic number.

It is an amenable number.

6744389 is a deficient number, since it is larger than the sum of its proper divisors (1).

6744389 is an equidigital number, since it uses as much as digits as its factorization.

6744389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 41.

The square root of 6744389 is about 2596.9961494003. The cubic root of 6744389 is about 188.9357769157.

The spelling of 6744389 in words is "six million, seven hundred forty-four thousand, three hundred eighty-nine".