244121489 has 2 divisors, whose sum is σ = 244121490. Its totient is φ = 244121488.

The previous prime is 244121483. The next prime is 244121539. The reversal of 244121489 is 984121442.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242113600 + 2007889 = 15560^2 + 1417^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244121489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (244121483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122060744 + 122060745.

It is an arithmetic number, because the mean of its divisors is an integer number (122060745).

Almost surely, 2^244121489 is an apocalyptic number.

It is an amenable number.

244121489 is a deficient number, since it is larger than the sum of its proper divisors (1).

244121489 is an equidigital number, since it uses as much as digits as its factorization.

244121489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 35.

The square root of 244121489 is about 15624.3876360003. The cubic root of 244121489 is about 624.9836701867.

The spelling of 244121489 in words is "two hundred forty-four million, one hundred twenty-one thousand, four hundred eighty-nine".