1216433 has 2 divisors, whose sum is σ = 1216434. Its totient is φ = 1216432.

The previous prime is 1216421. The next prime is 1216441. The reversal of 1216433 is 3346121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 889249 + 327184 = 943^2 + 572^2 .

It is a cyclic number.

It is not a de Polignac number, because 1216433 - 2⁴ = 1216417 is a prime.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (1212433) 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 as a sum of consecutive naturals, namely, 608216 + 608217.

It is an arithmetic number, because the mean of its divisors is an integer number (608217).

2^1216433 is an apocalyptic number.

It is an amenable number.

1216433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1216433 is an equidigital number, since it uses as much as digits as its factorization.

1216433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 20.

The square root of 1216433 is about 1102.9202147028. The cubic root of 1216433 is about 106.7487335015.

The spelling of 1216433 in words is "one million, two hundred sixteen thousand, four hundred thirty-three".