989997849322 has 8 divisors (see below), whose sum is σ = 1485010827972. Its totient is φ = 494994240000.

The previous prime is 989997849307. The next prime is 989997849329. The reversal of 989997849322 is 223948799989.

It can be written as a sum of positive squares in 2 ways, for example, as 805382399761 + 184615449561 = 897431^2 + 429669^2 .

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

It is not an unprimeable number, because it can be changed into a prime (989997849329) 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 3 ways as a sum of consecutive naturals, for example, 2071929 + ... + 2504572.

Almost surely, 2^989997849322 is an apocalyptic number.

989997849322 is a deficient number, since it is larger than the sum of its proper divisors (495012978650).

989997849322 is a wasteful number, since it uses less digits than its factorization.

989997849322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4684664.

The product of its digits is 1269789696, while the sum is 79.

The spelling of 989997849322 in words is "nine hundred eighty-nine billion, nine hundred ninety-seven million, eight hundred forty-nine thousand, three hundred twenty-two".