9996821149 has 8 divisors (see below), whose sum is σ = 11437486848. Its totient is φ = 8559292560.

The previous prime is 9996821147. The next prime is 9996821161. The reversal of 9996821149 is 9411286999.

It is a happy number.

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

It is not a de Polignac number, because 9996821149 - 2¹ = 9996821147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9996821093 and 9996821102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9996821143) 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 7 ways as a sum of consecutive naturals, for example, 777442 + ... + 790195.

It is an arithmetic number, because the mean of its divisors is an integer number (1429685856).

Almost surely, 2^9996821149 is an apocalyptic number.

It is an amenable number.

9996821149 is a deficient number, since it is larger than the sum of its proper divisors (1440665699).

9996821149 is a wasteful number, since it uses less digits than its factorization.

9996821149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568555.

The product of its digits is 2519424, while the sum is 58.

The square root of 9996821149 is about 99984.1044816625. The cubic root of 9996821149 is about 2154.2063782756.

The spelling of 9996821149 in words is "nine billion, nine hundred ninety-six million, eight hundred twenty-one thousand, one hundred forty-nine".