121744589 has 12 divisors (see below), whose sum is σ = 127815996. Its totient is φ = 115950912.

The previous prime is 121744583. The next prime is 121744591. The reversal of 121744589 is 985447121.

It can be written as a sum of positive squares in 2 ways, for example, as 27984100 + 93760489 = 5290^2 + 9683^2 .

It is not a de Polignac number, because 121744589 - 2⁴ = 121744573 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121744583) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197009 + ... + 197625.

It is an arithmetic number, because the mean of its divisors is an integer number (10651333).

Almost surely, 2^121744589 is an apocalyptic number.

It is an amenable number.

121744589 is a deficient number, since it is larger than the sum of its proper divisors (6071407).

121744589 is an equidigital number, since it uses as much as digits as its factorization.

121744589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036 (or 1013 counting only the distinct ones).

The product of its digits is 80640, while the sum is 41.

The square root of 121744589 is about 11033.7930468176. The cubic root of 121744589 is about 495.6212164529.

The spelling of 121744589 in words is "one hundred twenty-one million, seven hundred forty-four thousand, five hundred eighty-nine".