99233809 has 4 divisors (see below), whose sum is σ = 101541616. Its totient is φ = 96926004.

The previous prime is 99233807. The next prime is 99233837. The reversal of 99233809 is 90833299.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90833299 = 1171 ⋅77569.

It is a cyclic number.

It is not a de Polignac number, because 99233809 - 2¹ = 99233807 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 2307763 = 99233809 / (9 + 9 + 2 + 3 + 3 + 8 + 0 + 9).

It is a Duffinian 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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1153839 + ... + 1153924.

It is an arithmetic number, because the mean of its divisors is an integer number (25385404).

Almost surely, 2^99233809 is an apocalyptic number.

It is an amenable number.

99233809 is a deficient number, since it is larger than the sum of its proper divisors (2307807).

99233809 is a wasteful number, since it uses less digits than its factorization.

99233809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2307806.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 99233809 is about 9961.6167864459. The cubic root of 99233809 is about 462.9703949461.

The spelling of 99233809 in words is "ninety-nine million, two hundred thirty-three thousand, eight hundred nine".