8406589 has 4 divisors (see below), whose sum is σ = 8455356. Its totient is φ = 8357824.

The previous prime is 8406583. The next prime is 8406631. The reversal of 8406589 is 9856048.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6543364 + 1863225 = 2558^2 + 1365^2 .

It is a cyclic number.

It is not a de Polignac number, because 8406589 - 2⁹ = 8406077 is a prime.

It is a super-2 number, since 2×8406589² = 141341477229842, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8406583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24124 + ... + 24469.

It is an arithmetic number, because the mean of its divisors is an integer number (2113839).

Almost surely, 2^8406589 is an apocalyptic number.

It is an amenable number.

8406589 is a deficient number, since it is larger than the sum of its proper divisors (48767).

8406589 is a wasteful number, since it uses less digits than its factorization.

8406589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48766.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 8406589 is about 2899.4118369076. The cubic root of 8406589 is about 203.3324085479.

The spelling of 8406589 in words is "eight million, four hundred six thousand, five hundred eighty-nine".