99128383 has 4 divisors (see below), whose sum is σ = 99497160. Its totient is φ = 98759608.

The previous prime is 99128353. The next prime is 99128389. The reversal of 99128383 is 38382199.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38382199 = 5557 ⋅6907.

It is a cyclic number.

It is not a de Polignac number, because 99128383 - 2⁹ = 99127871 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 (99128389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183985 + ... + 184522.

It is an arithmetic number, because the mean of its divisors is an integer number (24874290).

Almost surely, 2^99128383 is an apocalyptic number.

99128383 is a deficient number, since it is larger than the sum of its proper divisors (368777).

99128383 is a wasteful number, since it uses less digits than its factorization.

99128383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368776.

The product of its digits is 93312, while the sum is 43.

The square root of 99128383 is about 9956.3237693438. The cubic root of 99128383 is about 462.8063835993.

The spelling of 99128383 in words is "ninety-nine million, one hundred twenty-eight thousand, three hundred eighty-three".