99233821 has 8 divisors (see below), whose sum is σ = 102572288. Its totient is φ = 96003900.

The previous prime is 99233807. The next prime is 99233837. The reversal of 99233821 is 12833299.

It is not a de Polignac number, because 99233821 - 2¹³ = 99225629 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 (99233801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28126 + ... + 31456.

It is an arithmetic number, because the mean of its divisors is an integer number (12821536).

Almost surely, 2^99233821 is an apocalyptic number.

It is an amenable number.

99233821 is a deficient number, since it is larger than the sum of its proper divisors (3338467).

99233821 is an frugal number, since it uses more digits than its factorization.

99233821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3424 (or 3362 counting only the distinct ones).

The product of its digits is 23328, while the sum is 37.

The square root of 99233821 is about 9961.6173887577. The cubic root of 99233821 is about 462.9704136079.

The spelling of 99233821 in words is "ninety-nine million, two hundred thirty-three thousand, eight hundred twenty-one".