9914328821 has 8 divisors (see below), whose sum is σ = 10781242200. Its totient is φ = 9078939648.

The previous prime is 9914328811. The next prime is 9914328863. The reversal of 9914328821 is 1288234199.

It can be written as a sum of positive squares in 4 ways, for example, as 6768352900 + 3145975921 = 82270^2 + 56089^2 .

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 9914328821 - 2¹⁴ = 9914312437 is a prime.

It is a super-2 number, since 2×9914328821² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9914328811) 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, 7880396 + ... + 7881653.

It is an arithmetic number, because the mean of its divisors is an integer number (1347655275).

Almost surely, 2^9914328821 is an apocalyptic number.

It is an amenable number.

9914328821 is a deficient number, since it is larger than the sum of its proper divisors (866913379).

9914328821 is a wasteful number, since it uses less digits than its factorization.

9914328821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15762103.

The product of its digits is 248832, while the sum is 47.

The square root of 9914328821 is about 99570.7227100416. The cubic root of 9914328821 is about 2148.2646043930.

The spelling of 9914328821 in words is "nine billion, nine hundred fourteen million, three hundred twenty-eight thousand, eight hundred twenty-one".