6384989 has 6 divisors (see below), whose sum is σ = 6914106. Its totient is φ = 5893680.

The previous prime is 6384953. The next prime is 6384991. The reversal of 6384989 is 9894836.

6384989 = 483² + 484² + ... + 508².

It can be written as a sum of positive squares in 3 ways, for example, as 209764 + 6175225 = 458^2 + 2485^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6384989 is a prime.

It is a d-powerful number, because it can be written as 6⁴ + 3⁹ + 8³ + 4¹⁰ + 9⁶ + 8³ + 9⁷ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6384919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18722 + ... + 19059.

It is an arithmetic number, because the mean of its divisors is an integer number (1152351).

Almost surely, 2^6384989 is an apocalyptic number.

It is an amenable number.

6384989 is a deficient number, since it is larger than the sum of its proper divisors (529117).

6384989 is a wasteful number, since it uses less digits than its factorization.

6384989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37807 (or 37794 counting only the distinct ones).

The product of its digits is 373248, while the sum is 47.

The square root of 6384989 is about 2526.8535770796. The cubic root of 6384989 is about 185.5182836893.

The spelling of 6384989 in words is "six million, three hundred eighty-four thousand, nine hundred eighty-nine".