6489509 has 8 divisors (see below), whose sum is σ = 7214592. Its totient is φ = 5796720.

The previous prime is 6489499. The next prime is 6489551. The reversal of 6489509 is 9059846.

6489509 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6489509 - 2⁸ = 6489253 is a prime.

It is a super-2 number, since 2×6489509² = 84227454122162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6489559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7649 + ... + 8454.

It is an arithmetic number, because the mean of its divisors is an integer number (901824).

Almost surely, 2^6489509 is an apocalyptic number.

It is an amenable number.

6489509 is a deficient number, since it is larger than the sum of its proper divisors (725083).

6489509 is a wasteful number, since it uses less digits than its factorization.

6489509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16147.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 6489509 is about 2547.4514715692. The cubic root of 6489509 is about 186.5250992246.

The spelling of 6489509 in words is "six million, four hundred eighty-nine thousand, five hundred nine".