9691947 has 16 divisors (see below), whose sum is σ = 14983680. Its totient is φ = 6179976.

The previous prime is 9691943. The next prime is 9691963. The reversal of 9691947 is 7491969.

It is not a de Polignac number, because 9691947 - 2² = 9691943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9691943) 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, 7183 + ... + 8424.

It is an arithmetic number, because the mean of its divisors is an integer number (936480).

Almost surely, 2^9691947 is an apocalyptic number.

9691947 is a deficient number, since it is larger than the sum of its proper divisors (5291733).

9691947 is a wasteful number, since it uses less digits than its factorization.

9691947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15639 (or 15633 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 9691947 is about 3113.1892008036. The cubic root of 9691947 is about 213.2080886488.

It can be divided in two parts, 969 and 1947, that added together give a square (2916 = 54²).

The spelling of 9691947 in words is "nine million, six hundred ninety-one thousand, nine hundred forty-seven".