99988988999 has 2 divisors, whose sum is σ = 99988989000. Its totient is φ = 99988988998.

The previous prime is 99988988963. The next prime is 99988989041.

99988988999 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99988988999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99988988909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49994494499 + 49994494500.

It is an arithmetic number, because the mean of its divisors is an integer number (49994494500).

Almost surely, 2^99988988999 is an apocalyptic number.

99988988999 is a deficient number, since it is larger than the sum of its proper divisors (1).

99988988999 is an equidigital number, since it uses as much as digits as its factorization.

99988988999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19591041024, while the sum is 95.

The spelling of 99988988999 in words is "ninety-nine billion, nine hundred eighty-eight million, nine hundred eighty-eight thousand, nine hundred ninety-nine".