99388088399 has 32 divisors (see below), whose sum is σ = 108767070720. Its totient is φ = 90499949568.

The previous prime is 99388088383. The next prime is 99388088473.

99388088399 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 99388088399 - 2⁴ = 99388088383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99388088599) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29997767 + ... + 30001079.

It is an arithmetic number, because the mean of its divisors is an integer number (3398970960).

Almost surely, 2^99388088399 is an apocalyptic number.

99388088399 is a deficient number, since it is larger than the sum of its proper divisors (9378982321).

99388088399 is a wasteful number, since it uses less digits than its factorization.

99388088399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3951.

The product of its (nonzero) digits is 241864704, while the sum is 74.

The spelling of 99388088399 in words is "ninety-nine billion, three hundred eighty-eight million, eighty-eight thousand, three hundred ninety-nine".