9216947 has 2 divisors, whose sum is σ = 9216948. Its totient is φ = 9216946.

The previous prime is 9216943. The next prime is 9216973. The reversal of 9216947 is 7496129.

9216947 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9216947 - 2² = 9216943 is a prime.

It is a super-2 number, since 2×9216947² = 169904224001618, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 9216947.

It is not a weakly prime, because it can be changed into another prime (9216943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4608473 + 4608474.

It is an arithmetic number, because the mean of its divisors is an integer number (4608474).

Almost surely, 2^9216947 is an apocalyptic number.

9216947 is a deficient number, since it is larger than the sum of its proper divisors (1).

9216947 is an equidigital number, since it uses as much as digits as its factorization.

9216947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 9216947 is about 3035.9425225126. The cubic root of 9216947 is about 209.6664925468. Note that the first 3 decimals are identical.

The spelling of 9216947 in words is "nine million, two hundred sixteen thousand, nine hundred forty-seven".