9978833 has 2 divisors, whose sum is σ = 9978834. Its totient is φ = 9978832.

The previous prime is 9978827. The next prime is 9978877. The reversal of 9978833 is 3388799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9778129 + 200704 = 3127^2 + 448^2 .

It is an emirp because it is prime and its reverse (3388799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9978833 - 2⁴ = 9978817 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 9 + 9 + 7⁸ + 8⁷ + 8⁷ + 3³ + 3⁹ .

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (9978883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4989416 + 4989417.

It is an arithmetic number, because the mean of its divisors is an integer number (4989417).

Almost surely, 2^9978833 is an apocalyptic number.

It is an amenable number.

9978833 is a deficient number, since it is larger than the sum of its proper divisors (1).

9978833 is an equidigital number, since it uses as much as digits as its factorization.

9978833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 47.

The square root of 9978833 is about 3158.9290906888. The cubic root of 9978833 is about 215.2913518936.

The spelling of 9978833 in words is "nine million, nine hundred seventy-eight thousand, eight hundred thirty-three".