984989489 has 6 divisors (see below), whose sum is σ = 1082674530. Its totient is φ = 895444880.

The previous prime is 984989477. The next prime is 984989497.

984989489 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 800437264 + 184552225 = 28292^2 + 13585^2 .

It is a de Polignac number, because none of the positive numbers 2^k-984989489 is a prime.

It is a super-2 number, since 2×984989489² = 1940408586880962242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (984989419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4070084 + ... + 4070325.

It is an arithmetic number, because the mean of its divisors is an integer number (180445755).

Almost surely, 2^984989489 is an apocalyptic number.

It is an amenable number.

984989489 is a deficient number, since it is larger than the sum of its proper divisors (97685041).

984989489 is a wasteful number, since it uses less digits than its factorization.

984989489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8140431 (or 8140420 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 68.

The square root of 984989489 is about 31384.5421983498. The cubic root of 984989489 is about 994.9712504003.

The spelling of 984989489 in words is "nine hundred eighty-four million, nine hundred eighty-nine thousand, four hundred eighty-nine".