9800491 has 2 divisors, whose sum is σ = 9800492. Its totient is φ = 9800490.

The previous prime is 9800471. The next prime is 9800519. The reversal of 9800491 is 1940089.

9800491 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 is a cyclic number.

It is not a de Polignac number, because 9800491 - 2⁷ = 9800363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9800471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4900245 + 4900246.

It is an arithmetic number, because the mean of its divisors is an integer number (4900246).

Almost surely, 2^9800491 is an apocalyptic number.

9800491 is a deficient number, since it is larger than the sum of its proper divisors (1).

9800491 is an equidigital number, since it uses as much as digits as its factorization.

9800491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 9800491 is about 3130.5735896158. The cubic root of 9800491 is about 214.0010699571.

The spelling of 9800491 in words is "nine million, eight hundred thousand, four hundred ninety-one".