989028617 has 2 divisors, whose sum is σ = 989028618. Its totient is φ = 989028616.

The previous prime is 989028583. The next prime is 989028631. The reversal of 989028617 is 716820989.

989028617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 781985296 + 207043321 = 27964^2 + 14389^2 .

It is a cyclic number.

It is not a de Polignac number, because 989028617 - 2⁸ = 989028361 is a prime.

It is a super-3 number, since 3×989028617³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (989028697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494514308 + 494514309.

It is an arithmetic number, because the mean of its divisors is an integer number (494514309).

Almost surely, 2^989028617 is an apocalyptic number.

It is an amenable number.

989028617 is a deficient number, since it is larger than the sum of its proper divisors (1).

989028617 is an equidigital number, since it uses as much as digits as its factorization.

989028617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 989028617 is about 31448.8253675714. The cubic root of 989028617 is about 996.3294156285.

The spelling of 989028617 in words is "nine hundred eighty-nine million, twenty-eight thousand, six hundred seventeen".