99388 has 6 divisors (see below), whose sum is σ = 173936. Its totient is φ = 49692.

The previous prime is 99377. The next prime is 99391. The reversal of 99388 is 88399.

It is a congruent number.

It is an unprimeable number.

99388 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12420 + ... + 12427.

2⁹⁹³⁸⁸ is an apocalyptic number.

It is an amenable number.

99388 is a deficient number, since it is larger than the sum of its proper divisors (74548).

99388 is a wasteful number, since it uses less digits than its factorization.

99388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24851 (or 24849 counting only the distinct ones).

The product of its digits is 15552, while the sum is 37.

The square root of 99388 is about 315.2586239899. The cubic root of 99388 is about 46.3210061001.

It can be divided in two parts, 993 and 88, that added together give a triangular number (1081 = T₄₆).

The spelling of 99388 in words is "ninety-nine thousand, three hundred eighty-eight".