984238889 has 2 divisors, whose sum is σ = 984238890. Its totient is φ = 984238888.

The previous prime is 984238883. The next prime is 984238897. The reversal of 984238889 is 988832489.

984238889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 496933264 + 487305625 = 22292^2 + 22075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-984238889 is a prime.

It is not a weakly prime, because it can be changed into another prime (984238883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492119444 + 492119445.

It is an arithmetic number, because the mean of its divisors is an integer number (492119445).

Almost surely, 2^984238889 is an apocalyptic number.

It is an amenable number.

984238889 is a deficient number, since it is larger than the sum of its proper divisors (1).

984238889 is an equidigital number, since it uses as much as digits as its factorization.

984238889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7962624, while the sum is 59.

The square root of 984238889 is about 31372.5818032243. The cubic root of 984238889 is about 994.7184506793.

The spelling of 984238889 in words is "nine hundred eighty-four million, two hundred thirty-eight thousand, eight hundred eighty-nine".