9996181 has 6 divisors (see below), whose sum is σ = 10824450. Its totient is φ = 9227088.

The previous prime is 9996157. The next prime is 9996209. The reversal of 9996181 is 1816999.

It can be written as a sum of positive squares in 3 ways, for example, as 1199025 + 8797156 = 1095^2 + 2966^2 .

It is not a de Polignac number, because 9996181 - 2⁵ = 9996149 is a prime.

It is a super-2 number, since 2×9996181² = 199847269169522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9996781) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 29406 + ... + 29743.

It is an arithmetic number, because the mean of its divisors is an integer number (1804075).

Almost surely, 2^9996181 is an apocalyptic number.

It is an amenable number.

9996181 is a deficient number, since it is larger than the sum of its proper divisors (828269).

9996181 is a wasteful number, since it uses less digits than its factorization.

9996181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59175 (or 59162 counting only the distinct ones).

The product of its digits is 34992, while the sum is 43.

The square root of 9996181 is about 3161.6737655868. The cubic root of 9996181 is about 215.4160395575.

The spelling of 9996181 in words is "nine million, nine hundred ninety-six thousand, one hundred eighty-one".