9788491 has 2 divisors, whose sum is σ = 9788492. Its totient is φ = 9788490.

The previous prime is 9788489. The next prime is 9788503. The reversal of 9788491 is 1948879.

It is a happy number.

9788491 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 9788491 - 2¹ = 9788489 is a prime.

Together with 9788489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9789491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4894245 + 4894246.

It is an arithmetic number, because the mean of its divisors is an integer number (4894246).

Almost surely, 2^9788491 is an apocalyptic number.

9788491 is a deficient number, since it is larger than the sum of its proper divisors (1).

9788491 is an equidigital number, since it uses as much as digits as its factorization.

9788491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 46.

The square root of 9788491 is about 3128.6564208938. The cubic root of 9788491 is about 213.9136912850.

It can be divided in two parts, 97 and 88491, that added together give a palindrome (88588).

The spelling of 9788491 in words is "nine million, seven hundred eighty-eight thousand, four hundred ninety-one".