9878747 has 2 divisors, whose sum is σ = 9878748. Its totient is φ = 9878746.

The previous prime is 9878731. The next prime is 9878749. The reversal of 9878747 is 7478789.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9878747 - 2⁴ = 9878731 is a prime.

Together with 9878749, it forms a pair of twin primes.

It is a Chen prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 9878695 and 9878704.

It is not a weakly prime, because it can be changed into another prime (9878749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4939373 + 4939374.

It is an arithmetic number, because the mean of its divisors is an integer number (4939374).

Almost surely, 2^9878747 is an apocalyptic number.

9878747 is a deficient number, since it is larger than the sum of its proper divisors (1).

9878747 is an equidigital number, since it uses as much as digits as its factorization.

9878747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 790272, while the sum is 50.

The square root of 9878747 is about 3143.0474065785. The cubic root of 9878747 is about 214.5691534120.

The spelling of 9878747 in words is "nine million, eight hundred seventy-eight thousand, seven hundred forty-seven".