9885979 has 2 divisors, whose sum is σ = 9885980. Its totient is φ = 9885978.

The previous prime is 9885913. The next prime is 9885989. The reversal of 9885979 is 9795889.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9885979 - 2¹¹ = 9883931 is a prime.

It is not a weakly prime, because it can be changed into another prime (9885989) 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, 4942989 + 4942990.

It is an arithmetic number, because the mean of its divisors is an integer number (4942990).

Almost surely, 2^9885979 is an apocalyptic number.

9885979 is a deficient number, since it is larger than the sum of its proper divisors (1).

9885979 is an equidigital number, since it uses as much as digits as its factorization.

9885979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 55.

The square root of 9885979 is about 3144.1976719030. The cubic root of 9885979 is about 214.6215009956.

The spelling of 9885979 in words is "nine million, eight hundred eighty-five thousand, nine hundred seventy-nine".