989996633 has 8 divisors (see below), whose sum is σ = 1006810560. Its totient is φ = 973201680.

The previous prime is 989996599. The next prime is 989996663. The reversal of 989996633 is 336699989.

It is a happy number.

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 989996633 - 2²⁰ = 988948057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (989996663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134708 + ... + 141866.

It is an arithmetic number, because the mean of its divisors is an integer number (125851320).

Almost surely, 2^989996633 is an apocalyptic number.

It is an amenable number.

989996633 is a deficient number, since it is larger than the sum of its proper divisors (16813927).

989996633 is a wasteful number, since it uses less digits than its factorization.

989996633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9487.

The product of its digits is 17006112, while the sum is 62.

The square root of 989996633 is about 31464.2119399168. The cubic root of 989996633 is about 996.6543635328.

The spelling of 989996633 in words is "nine hundred eighty-nine million, nine hundred ninety-six thousand, six hundred thirty-three".