33389993 has 8 divisors (see below), whose sum is σ = 41095488. Its totient is φ = 26418384.

The previous prime is 33389969. The next prime is 33390029. The reversal of 33389993 is 39998333.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33389993 - 2⁸ = 33389737 is a prime.

It is a super-2 number, since 2×33389993² = 2229783265080098, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (33389963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183371 + ... + 183552.

It is an arithmetic number, because the mean of its divisors is an integer number (5136936).

Almost surely, 2^33389993 is an apocalyptic number.

It is an amenable number.

33389993 is a deficient number, since it is larger than the sum of its proper divisors (7705495).

33389993 is a wasteful number, since it uses less digits than its factorization.

33389993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366943.

The product of its digits is 472392, while the sum is 47.

The square root of 33389993 is about 5778.4074795743. The cubic root of 33389993 is about 322.0120393374.

It can be divided in two parts, 3338 and 9993, that added together give a palindrome (13331).

The spelling of 33389993 in words is "thirty-three million, three hundred eighty-nine thousand, nine hundred ninety-three".