1224169 has 2 divisors, whose sum is σ = 1224170. Its totient is φ = 1224168.

The previous prime is 1224163. The next prime is 1224193. The reversal of 1224169 is 9614221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 974169 + 250000 = 987^2 + 500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1224169 is a prime.

It is a super-2 number, since 2×1224169² = 2997179481122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1224163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612084 + 612085.

It is an arithmetic number, because the mean of its divisors is an integer number (612085).

2^1224169 is an apocalyptic number.

It is an amenable number.

1224169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224169 is an equidigital number, since it uses as much as digits as its factorization.

1224169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 1224169 is about 1106.4217098376. The cubic root of 1224169 is about 106.9745477645.

The spelling of 1224169 in words is "one million, two hundred twenty-four thousand, one hundred sixty-nine".