9970811 has 2 divisors, whose sum is σ = 9970812. Its totient is φ = 9970810.

The previous prime is 9970787. The next prime is 9970847. The reversal of 9970811 is 1180799.

It is a weak prime.

It is an emirp because it is prime and its reverse (1180799) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9970811 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9970861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4985405 + 4985406.

It is an arithmetic number, because the mean of its divisors is an integer number (4985406).

Almost surely, 2^9970811 is an apocalyptic number.

9970811 is a deficient number, since it is larger than the sum of its proper divisors (1).

9970811 is an equidigital number, since it uses as much as digits as its factorization.

9970811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 9970811 is about 3157.6591012964. The cubic root of 9970811 is about 215.2336454053.

The spelling of 9970811 in words is "nine million, nine hundred seventy thousand, eight hundred eleven".