906489 has 12 divisors (see below), whose sum is σ = 1337856. Its totient is φ = 591192.

The previous prime is 906487. The next prime is 906497. The reversal of 906489 is 984609.

906489 is a `hidden beast` number, since 9 + 0 + 648 + 9 = 666.

It is not a de Polignac number, because 906489 - 2¹ = 906487 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (906481) 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 11 ways as a sum of consecutive naturals, for example, 649 + ... + 1494.

It is an arithmetic number, because the mean of its divisors is an integer number (111488).

2⁹⁰⁶⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

906489 is a deficient number, since it is larger than the sum of its proper divisors (431367).

906489 is a wasteful number, since it uses less digits than its factorization.

906489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196 (or 2193 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 906489 is about 952.0971589076. The cubic root of 906489 is about 96.7804222980.

The spelling of 906489 in words is "nine hundred six thousand, four hundred eighty-nine".