1224540089 has 2 divisors, whose sum is σ = 1224540090. Its totient is φ = 1224540088.

The previous prime is 1224540061. The next prime is 1224540193. The reversal of 1224540089 is 9800454221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1220803600 + 3736489 = 34940^2 + 1933^2 .

It is an emirp because it is prime and its reverse (9800454221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1224540089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1224540019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612270044 + 612270045.

It is an arithmetic number, because the mean of its divisors is an integer number (612270045).

Almost surely, 2^1224540089 is an apocalyptic number.

It is an amenable number.

1224540089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224540089 is an equidigital number, since it uses as much as digits as its factorization.

1224540089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 1224540089 is about 34993.4292260704. The cubic root of 1224540089 is about 1069.8535593109.

The spelling of 1224540089 in words is "one billion, two hundred twenty-four million, five hundred forty thousand, eighty-nine".