9478681 has 2 divisors, whose sum is σ = 9478682. Its totient is φ = 9478680.

The previous prime is 9478643. The next prime is 9478687. The reversal of 9478681 is 1868749.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5929225 + 3549456 = 2435^2 + 1884^2 .

It is an emirp because it is prime and its reverse (1868749) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9478681 - 2¹⁷ = 9347609 is a prime.

It is a super-2 number, since 2×9478681² = 179690786999522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9478687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4739340 + 4739341.

It is an arithmetic number, because the mean of its divisors is an integer number (4739341).

Almost surely, 2^9478681 is an apocalyptic number.

It is an amenable number.

9478681 is a deficient number, since it is larger than the sum of its proper divisors (1).

9478681 is an equidigital number, since it uses as much as digits as its factorization.

9478681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 43.

The square root of 9478681 is about 3078.7466605747. The cubic root of 9478681 is about 211.6326333223.

The spelling of 9478681 in words is "nine million, four hundred seventy-eight thousand, six hundred eighty-one".