6541389 has 24 divisors (see below), whose sum is σ = 9784320. Its totient is φ = 4209408.

The previous prime is 6541373. The next prime is 6541393. The reversal of 6541389 is 9831456.

It is not a de Polignac number, because 6541389 - 2⁴ = 6541373 is a prime.

It is a super-3 number, since 3×6541389³ (a number of 21 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6541309) 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 in 23 ways as a sum of consecutive naturals, for example, 51444 + ... + 51570.

It is an arithmetic number, because the mean of its divisors is an integer number (407680).

Almost surely, 2^6541389 is an apocalyptic number.

It is an amenable number.

6541389 is a deficient number, since it is larger than the sum of its proper divisors (3242931).

6541389 is a wasteful number, since it uses less digits than its factorization.

6541389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289 (or 286 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 6541389 is about 2557.6139270813. The cubic root of 6541389 is about 187.0208351822.

The spelling of 6541389 in words is "six million, five hundred forty-one thousand, three hundred eighty-nine".