9691994 has 8 divisors (see below), whose sum is σ = 15656340. Its totient is φ = 4473216.

The previous prime is 9691987. The next prime is 9691999. The reversal of 9691994 is 4991969.

It can be written as a sum of positive squares in 2 ways, for example, as 9690769 + 1225 = 3113^2 + 35^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9691999) 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 3 ways as a sum of consecutive naturals, for example, 186359 + ... + 186410.

Almost surely, 2^9691994 is an apocalyptic number.

9691994 is a deficient number, since it is larger than the sum of its proper divisors (5964346).

9691994 is a wasteful number, since it uses less digits than its factorization.

9691994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372784.

The product of its digits is 157464, while the sum is 47.

The square root of 9691994 is about 3113.1967493238. The cubic root of 9691994 is about 213.2084332911.

The spelling of 9691994 in words is "nine million, six hundred ninety-one thousand, nine hundred ninety-four".