9799927 has 2 divisors, whose sum is σ = 9799928. Its totient is φ = 9799926.

The previous prime is 9799913. The next prime is 9799957. The reversal of 9799927 is 7299979.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9799927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9799957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4899963 + 4899964.

It is an arithmetic number, because the mean of its divisors is an integer number (4899964).

Almost surely, 2^9799927 is an apocalyptic number.

9799927 is a deficient number, since it is larger than the sum of its proper divisors (1).

9799927 is an equidigital number, since it uses as much as digits as its factorization.

9799927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 642978, while the sum is 52.

The square root of 9799927 is about 3130.4835089807. The cubic root of 9799927 is about 213.9969647574.

Adding to 9799927 its sum of digits (52), we get a palindrome (9799979).

The spelling of 9799927 in words is "nine million, seven hundred ninety-nine thousand, nine hundred twenty-seven".