1224289 has 8 divisors (see below), whose sum is σ = 1414368. Its totient is φ = 1047360.

The previous prime is 1224287. The next prime is 1224299. The reversal of 1224289 is 9824221.

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 1224289 - 2¹ = 1224287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1224281) 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, 3087 + ... + 3460.

It is an arithmetic number, because the mean of its divisors is an integer number (176796).

2^1224289 is an apocalyptic number.

It is an amenable number.

1224289 is a deficient number, since it is larger than the sum of its proper divisors (190079).

1224289 is a wasteful number, since it uses less digits than its factorization.

1224289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6575.

The product of its digits is 2304, while the sum is 28.

The square root of 1224289 is about 1106.4759373796. The cubic root of 1224289 is about 106.9780430679.

The spelling of 1224289 in words is "one million, two hundred twenty-four thousand, two hundred eighty-nine".