9218289 has 8 divisors (see below), whose sum is σ = 12332320. Its totient is φ = 6124896.

The previous prime is 9218281. The next prime is 9218303. The reversal of 9218289 is 9828129.

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

It is not a de Polignac number, because 9218289 - 2³ = 9218281 is a prime.

It is a Duffinian number.

9218289 is a modest number, since divided by 8289 gives 921 as remainder.

9218289 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9218281) 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, 4084 + ... + 5925.

It is an arithmetic number, because the mean of its divisors is an integer number (1541540).

Almost surely, 2^9218289 is an apocalyptic number.

It is an amenable number.

9218289 is a deficient number, since it is larger than the sum of its proper divisors (3114031).

9218289 is a wasteful number, since it uses less digits than its factorization.

9218289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10319.

The product of its digits is 20736, while the sum is 39.

The square root of 9218289 is about 3036.1635331451. The cubic root of 9218289 is about 209.6766679617.

It can be divided in two parts, 921 and 8289, that multiplied together give a square (7634169 = 2763²).

The spelling of 9218289 in words is "nine million, two hundred eighteen thousand, two hundred eighty-nine".