9516921 has 8 divisors (see below), whose sum is σ = 12707520. Its totient is φ = 6335472.

The previous prime is 9516887. The next prime is 9516931. The reversal of 9516921 is 1296159.

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

It is not a de Polignac number, because 9516921 - 2¹⁰ = 9515897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9516931) 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 7 ways as a sum of consecutive naturals, for example, 700 + ... + 4418.

It is an arithmetic number, because the mean of its divisors is an integer number (1588440).

Almost surely, 2^9516921 is an apocalyptic number.

It is an amenable number.

9516921 is a deficient number, since it is larger than the sum of its proper divisors (3190599).

9516921 is a wasteful number, since it uses less digits than its factorization.

9516921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4575.

The product of its digits is 4860, while the sum is 33.

The square root of 9516921 is about 3084.9507289420. The cubic root of 9516921 is about 211.9168491399.

The spelling of 9516921 in words is "nine million, five hundred sixteen thousand, nine hundred twenty-one".