9991083 has 16 divisors (see below), whose sum is σ = 14017536. Its totient is φ = 6321120.

The previous prime is 9991067. The next prime is 9991123. The reversal of 9991083 is 3801999.

It is not a de Polignac number, because 9991083 - 2⁴ = 9991067 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (9991063) 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 15 ways as a sum of consecutive naturals, for example, 3916 + ... + 5942.

It is an arithmetic number, because the mean of its divisors is an integer number (876096).

Almost surely, 2^9991083 is an apocalyptic number.

9991083 is a gapful number since it is divisible by the number (93) formed by its first and last digit.

9991083 is a deficient number, since it is larger than the sum of its proper divisors (4026453).

9991083 is a wasteful number, since it uses less digits than its factorization.

9991083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 9991083 is about 3160.8674442311. The cubic root of 9991083 is about 215.3794129794.

The spelling of 9991083 in words is "nine million, nine hundred ninety-one thousand, eighty-three".