33385999 has 4 divisors (see below), whose sum is σ = 33535936. Its totient is φ = 33236064.

The previous prime is 33385997. The next prime is 33386029. The reversal of 33385999 is 99958333.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99958333 = 829 ⋅120577.

It is a cyclic number.

It is not a de Polignac number, because 33385999 - 2¹ = 33385997 is a prime.

It is a super-3 number, since 3×33385999³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33385991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74634 + ... + 75079.

It is an arithmetic number, because the mean of its divisors is an integer number (8383984).

Almost surely, 2^33385999 is an apocalyptic number.

33385999 is a deficient number, since it is larger than the sum of its proper divisors (149937).

33385999 is a wasteful number, since it uses less digits than its factorization.

33385999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149936.

The product of its digits is 787320, while the sum is 49.

The square root of 33385999 is about 5778.0618722890. The cubic root of 33385999 is about 321.9991994888. Note that the first 3 decimals are identical.

The spelling of 33385999 in words is "thirty-three million, three hundred eighty-five thousand, nine hundred ninety-nine".