989101321 has 8 divisors (see below), whose sum is σ = 1065713544. Its totient is φ = 912564480.

The previous prime is 989101319. The next prime is 989101339. The reversal of 989101321 is 123101989.

It can be written as a sum of positive squares in 4 ways, for example, as 367297225 + 621804096 = 19165^2 + 24936^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 989101321 - 2¹ = 989101319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989101391) 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 in 7 ways as a sum of consecutive naturals, for example, 10065 + ... + 45601.

It is an arithmetic number, because the mean of its divisors is an integer number (133214193).

Almost surely, 2^989101321 is an apocalyptic number.

It is an amenable number.

989101321 is a deficient number, since it is larger than the sum of its proper divisors (76612223).

989101321 is a wasteful number, since it uses less digits than its factorization.

989101321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37691.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 989101321 is about 31449.9812559563. The cubic root of 989101321 is about 996.3538285922.

The spelling of 989101321 in words is "nine hundred eighty-nine million, one hundred one thousand, three hundred twenty-one".