9930491 has 2 divisors, whose sum is σ = 9930492. Its totient is φ = 9930490.

The previous prime is 9930469. The next prime is 9930497. The reversal of 9930491 is 1940399.

It is a strong prime.

It is an emirp because it is prime and its reverse (1940399) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9930491 is a prime.

It is a super-2 number, since 2×9930491² = 197229303002162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9930497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4965245 + 4965246.

It is an arithmetic number, because the mean of its divisors is an integer number (4965246).

Almost surely, 2^9930491 is an apocalyptic number.

9930491 is a deficient number, since it is larger than the sum of its proper divisors (1).

9930491 is an equidigital number, since it uses as much as digits as its factorization.

9930491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 9930491 is about 3151.2681574249. The cubic root of 9930491 is about 214.9431326073.

The spelling of 9930491 in words is "nine million, nine hundred thirty thousand, four hundred ninety-one".