9920803 has 2 divisors, whose sum is σ = 9920804. Its totient is φ = 9920802.

The previous prime is 9920783. The next prime is 9920821. The reversal of 9920803 is 3080299.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9920803 is a prime.

It is not a weakly prime, because it can be changed into another prime (9920863) 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, 4960401 + 4960402.

It is an arithmetic number, because the mean of its divisors is an integer number (4960402).

Almost surely, 2^9920803 is an apocalyptic number.

9920803 is a deficient number, since it is larger than the sum of its proper divisors (1).

9920803 is an equidigital number, since it uses as much as digits as its factorization.

9920803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 9920803 is about 3149.7306234026. The cubic root of 9920803 is about 214.8732117071.

It can be divided in two parts, 99 and 20803, that added together give a palindrome (20902).

The spelling of 9920803 in words is "nine million, nine hundred twenty thousand, eight hundred three".