1211489 has 2 divisors, whose sum is σ = 1211490. Its totient is φ = 1211488.

The previous prime is 1211477. The next prime is 1211501. The reversal of 1211489 is 9841121.

It is a balanced prime because it is at equal distance from previous prime (1211477) and next prime (1211501).

It can be written as a sum of positive squares in only one way, i.e., 1067089 + 144400 = 1033^2 + 380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211489 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211389) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605744 + 605745.

It is an arithmetic number, because the mean of its divisors is an integer number (605745).

2^1211489 is an apocalyptic number.

It is an amenable number.

1211489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211489 is an equidigital number, since it uses as much as digits as its factorization.

1211489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 26.

The square root of 1211489 is about 1100.6766100904. The cubic root of 1211489 is about 106.6039159998.

The spelling of 1211489 in words is "one million, two hundred eleven thousand, four hundred eighty-nine".