9991282 has 8 divisors (see below), whose sum is σ = 17127936. Its totient is φ = 4281972.

The previous prime is 9991277. The next prime is 9991297. The reversal of 9991282 is 2821999.

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

It is a super-3 number, since 3×9991282³ (a number of 22 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356818 + ... + 356845.

It is an arithmetic number, because the mean of its divisors is an integer number (2140992).

Almost surely, 2^9991282 is an apocalyptic number.

9991282 is a deficient number, since it is larger than the sum of its proper divisors (7136654).

9991282 is a wasteful number, since it uses less digits than its factorization.

9991282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713672.

The product of its digits is 23328, while the sum is 40.

The square root of 9991282 is about 3160.8989227750. The cubic root of 9991282 is about 215.3808429284.

The spelling of 9991282 in words is "nine million, nine hundred ninety-one thousand, two hundred eighty-two".