121488589 has 2 divisors, whose sum is σ = 121488590. Its totient is φ = 121488588.

The previous prime is 121488547. The next prime is 121488593. The reversal of 121488589 is 985884121.

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., 111471364 + 10017225 = 10558^2 + 3165^2 .

It is a cyclic number.

It is not a de Polignac number, because 121488589 - 2¹⁵ = 121455821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121488509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60744294 + 60744295.

It is an arithmetic number, because the mean of its divisors is an integer number (60744295).

Almost surely, 2^121488589 is an apocalyptic number.

It is an amenable number.

121488589 is a deficient number, since it is larger than the sum of its proper divisors (1).

121488589 is an equidigital number, since it uses as much as digits as its factorization.

121488589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 184320, while the sum is 46.

The square root of 121488589 is about 11022.1862168991. The cubic root of 121488589 is about 495.2735813789.

The spelling of 121488589 in words is "one hundred twenty-one million, four hundred eighty-eight thousand, five hundred eighty-nine".