9791081 has 2 divisors, whose sum is σ = 9791082. Its totient is φ = 9791080.

The previous prime is 9791069. The next prime is 9791101. The reversal of 9791081 is 1801979.

9791081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6760000 + 3031081 = 2600^2 + 1741^2 .

It is a cyclic number.

It is not a de Polignac number, because 9791081 - 2¹⁰ = 9790057 is a prime.

It is a super-2 number, since 2×9791081² = 191730534297122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9791981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4895540 + 4895541.

It is an arithmetic number, because the mean of its divisors is an integer number (4895541).

Almost surely, 2^9791081 is an apocalyptic number.

It is an amenable number.

9791081 is a deficient number, since it is larger than the sum of its proper divisors (1).

9791081 is an equidigital number, since it uses as much as digits as its factorization.

9791081 is an evil number, because the sum of its binary digits is even.

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

The square root of 9791081 is about 3129.0703092133. The cubic root of 9791081 is about 213.9325565558.

The spelling of 9791081 in words is "nine million, seven hundred ninety-one thousand, eighty-one".