9985555883 has 2 divisors, whose sum is σ = 9985555884. Its totient is φ = 9985555882.

The previous prime is 9985555861. The next prime is 9985555907. The reversal of 9985555883 is 3885555899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9985555883 - 2¹² = 9985551787 is a prime.

It is a super-2 number, since 2×9985555883² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9985555813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4992777941 + 4992777942.

It is an arithmetic number, because the mean of its divisors is an integer number (4992777942).

Almost surely, 2^9985555883 is an apocalyptic number.

9985555883 is a deficient number, since it is larger than the sum of its proper divisors (1).

9985555883 is an equidigital number, since it uses as much as digits as its factorization.

9985555883 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760000, while the sum is 65.

The square root of 9985555883 is about 99927.7533170840. The cubic root of 9985555883 is about 2153.3968933118.

The spelling of 9985555883 in words is "nine billion, nine hundred eighty-five million, five hundred fifty-five thousand, eight hundred eighty-three".