99999533 has 4 divisors (see below), whose sum is σ = 102438588. Its totient is φ = 97560480.

The previous prime is 99999517. The next prime is 99999539. The reversal of 99999533 is 33599999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33599999 = 19 ⋅1768421.

It can be written as a sum of positive squares in 2 ways, for example, as 37478884 + 62520649 = 6122^2 + 7907^2 .

It is a cyclic number.

It is not a de Polignac number, because 99999533 - 2⁴ = 99999517 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99999539) 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 3 ways as a sum of consecutive naturals, for example, 1219466 + ... + 1219547.

It is an arithmetic number, because the mean of its divisors is an integer number (25609647).

Almost surely, 2^99999533 is an apocalyptic number.

It is an amenable number.

99999533 is a deficient number, since it is larger than the sum of its proper divisors (2439055).

99999533 is a wasteful number, since it uses less digits than its factorization.

99999533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2439054.

The product of its digits is 2657205, while the sum is 56.

The square root of 99999533 is about 9999.9766499727. The cubic root of 99999533 is about 464.1581608195.

The spelling of 99999533 in words is "ninety-nine million, nine hundred ninety-nine thousand, five hundred thirty-three".