99933999 has 16 divisors (see below), whose sum is σ = 146774784. Its totient is φ = 59976000.

The previous prime is 99933989. The next prime is 99934027.

99933999 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 99933999 - 2⁴ = 99933983 is a prime.

It is a super-2 number, since 2×99933999² = 19973608312264002, which contains 22 as substring.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99933949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11302 + ... + 18099.

It is an arithmetic number, because the mean of its divisors is an integer number (9173424).

Almost surely, 2^99933999 is an apocalyptic number.

99933999 is a deficient number, since it is larger than the sum of its proper divisors (46840785).

99933999 is a wasteful number, since it uses less digits than its factorization.

99933999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29518.

The product of its digits is 4782969, while the sum is 60.

The square root of 99933999 is about 9996.6994053037. The cubic root of 99933999 is about 464.0567443855.

The spelling of 99933999 in words is "ninety-nine million, nine hundred thirty-three thousand, nine hundred ninety-nine".