988565999 has 2 divisors, whose sum is σ = 988566000. Its totient is φ = 988565998.

The previous prime is 988565971. The next prime is 988566011. The reversal of 988565999 is 999565889.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-988565999 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (988565099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494282999 + 494283000.

It is an arithmetic number, because the mean of its divisors is an integer number (494283000).

Almost surely, 2^988565999 is an apocalyptic number.

988565999 is a deficient number, since it is larger than the sum of its proper divisors (1).

988565999 is an equidigital number, since it uses as much as digits as its factorization.

988565999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62985600, while the sum is 68.

The square root of 988565999 is about 31441.4694154074. The cubic root of 988565999 is about 996.1740470856.

The spelling of 988565999 in words is "nine hundred eighty-eight million, five hundred sixty-five thousand, nine hundred ninety-nine".