6819489 has 12 divisors (see below), whose sum is σ = 10091172. Its totient is φ = 4435200.

The previous prime is 6819481. The next prime is 6819493. The reversal of 6819489 is 9849186.

It can be written as a sum of positive squares in 2 ways, for example, as 3359889 + 3459600 = 1833^2 + 1860^2 .

It is not a de Polignac number, because 6819489 - 2³ = 6819481 is a prime.

It is a super-2 number, since 2×6819489² = 93010860442242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6819481) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8872 + ... + 9609.

It is an arithmetic number, because the mean of its divisors is an integer number (840931).

Almost surely, 2^6819489 is an apocalyptic number.

It is an amenable number.

6819489 is a deficient number, since it is larger than the sum of its proper divisors (3271683).

6819489 is a wasteful number, since it uses less digits than its factorization.

6819489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18528 (or 18525 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 6819489 is about 2611.4151336009. The cubic root of 6819489 is about 189.6344680432.

The spelling of 6819489 in words is "six million, eight hundred nineteen thousand, four hundred eighty-nine".