9780971 has 2 divisors, whose sum is σ = 9780972. Its totient is φ = 9780970.

The previous prime is 9780931. The next prime is 9780973. The reversal of 9780971 is 1790879.

It is a strong prime.

It is an emirp because it is prime and its reverse (1790879) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9780971 is a prime.

Together with 9780973, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9780973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4890485 + 4890486.

It is an arithmetic number, because the mean of its divisors is an integer number (4890486).

Almost surely, 2^9780971 is an apocalyptic number.

9780971 is a deficient number, since it is larger than the sum of its proper divisors (1).

9780971 is an equidigital number, since it uses as much as digits as its factorization.

9780971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 9780971 is about 3127.4543961503. The cubic root of 9780971 is about 213.8588975795.

The spelling of 9780971 in words is "nine million, seven hundred eighty thousand, nine hundred seventy-one".