9647491 has 12 divisors (see below), whose sum is σ = 11382672. Its totient is φ = 8004096.

The previous prime is 9647489. The next prime is 9647501. The reversal of 9647491 is 1947469.

It is a happy number.

It is not a de Polignac number, because 9647491 - 2¹ = 9647489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9647411) 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 11 ways as a sum of consecutive naturals, for example, 49891 + ... + 50083.

It is an arithmetic number, because the mean of its divisors is an integer number (948556).

Almost surely, 2^9647491 is an apocalyptic number.

9647491 is a deficient number, since it is larger than the sum of its proper divisors (1735181).

9647491 is an equidigital number, since it uses as much as digits as its factorization.

9647491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 237 counting only the distinct ones).

The product of its digits is 54432, while the sum is 40.

The square root of 9647491 is about 3106.0410493102. The cubic root of 9647491 is about 212.8816008282.

The spelling of 9647491 in words is "nine million, six hundred forty-seven thousand, four hundred ninety-one".