9928783 has 2 divisors, whose sum is σ = 9928784. Its totient is φ = 9928782.

The previous prime is 9928747. The next prime is 9928813. The reversal of 9928783 is 3878299.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9928783 is a prime.

It is a super-2 number, since 2×9928783² = 197161463722178, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9928283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4964391 + 4964392.

It is an arithmetic number, because the mean of its divisors is an integer number (4964392).

Almost surely, 2^9928783 is an apocalyptic number.

9928783 is a deficient number, since it is larger than the sum of its proper divisors (1).

9928783 is an equidigital number, since it uses as much as digits as its factorization.

9928783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 46.

The square root of 9928783 is about 3150.9971437626. The cubic root of 9928783 is about 214.9308088152.

It can be divided in two parts, 99 and 28783, that added together give a palindrome (28882).

The spelling of 9928783 in words is "nine million, nine hundred twenty-eight thousand, seven hundred eighty-three".