6488989 has 8 divisors (see below), whose sum is σ = 7008120. Its totient is φ = 5972736.

The previous prime is 6488987. The next prime is 6489083. The reversal of 6488989 is 9898846.

6488989 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 72900 + 6416089 = 270^2 + 2533^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6488989 - 2¹ = 6488987 is a prime.

It is a Duffinian number.

6488989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6488987) 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 7 ways as a sum of consecutive naturals, for example, 7617 + ... + 8425.

It is an arithmetic number, because the mean of its divisors is an integer number (876015).

Almost surely, 2^6488989 is an apocalyptic number.

It is an amenable number.

6488989 is a deficient number, since it is larger than the sum of its proper divisors (519131).

6488989 is a wasteful number, since it uses less digits than its factorization.

6488989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439.

The product of its digits is 995328, while the sum is 52.

The square root of 6488989 is about 2547.3494067363. The cubic root of 6488989 is about 186.5201170479.

The spelling of 6488989 in words is "six million, four hundred eighty-eight thousand, nine hundred eighty-nine".