989298305 has 12 divisors (see below), whose sum is σ = 1207289916. Its totient is φ = 778032000.

The previous prime is 989298301. The next prime is 989298329. The reversal of 989298305 is 503892989.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 498941569 + 490356736 = 22337^2 + 22144^2 .

It is not a de Polignac number, because 989298305 - 2² = 989298301 is a prime.

It is a super-2 number, since 2×989298305² = 1957422272551746050, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (989298301) 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 11 ways as a sum of consecutive naturals, for example, 548405 + ... + 550205.

It is an arithmetic number, because the mean of its divisors is an integer number (100607493).

Almost surely, 2^989298305 is an apocalyptic number.

It is an amenable number.

989298305 is a deficient number, since it is larger than the sum of its proper divisors (217991611).

989298305 is an frugal number, since it uses more digits than its factorization.

989298305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3668 (or 1867 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 53.

The square root of 989298305 is about 31453.1128030279. The cubic root of 989298305 is about 996.4199669917.

The spelling of 989298305 in words is "nine hundred eighty-nine million, two hundred ninety-eight thousand, three hundred five".