1201489 has 2 divisors, whose sum is σ = 1201490. Its totient is φ = 1201488.

The previous prime is 1201483. The next prime is 1201493. The reversal of 1201489 is 9841021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1192464 + 9025 = 1092^2 + 95^2 .

It is an emirp because it is prime and its reverse (9841021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201489 - 2³ = 1201481 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600744 + 600745.

It is an arithmetic number, because the mean of its divisors is an integer number (600745).

2^1201489 is an apocalyptic number.

It is an amenable number.

1201489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201489 is an equidigital number, since it uses as much as digits as its factorization.

1201489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1201489 is about 1096.1245367202. The cubic root of 1201489 is about 106.3097914906.

The spelling of 1201489 in words is "one million, two hundred one thousand, four hundred eighty-nine".