1216459 has 2 divisors, whose sum is σ = 1216460. Its totient is φ = 1216458.

The previous prime is 1216451. The next prime is 1216489. The reversal of 1216459 is 9546121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1216459 - 2³ = 1216451 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1216451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608229 + 608230.

It is an arithmetic number, because the mean of its divisors is an integer number (608230).

2^1216459 is an apocalyptic number.

1216459 is a deficient number, since it is larger than the sum of its proper divisors (1).

1216459 is an equidigital number, since it uses as much as digits as its factorization.

1216459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 28.

The square root of 1216459 is about 1102.9320015305. The cubic root of 1216459 is about 106.7494940441.

It can be divided in two parts, 12 and 16459, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 1216459 in words is "one million, two hundred sixteen thousand, four hundred fifty-nine".