33807938999 has 4 divisors (see below), whose sum is σ = 33829351560. Its totient is φ = 33786526440.

The previous prime is 33807938963. The next prime is 33807939001. The reversal of 33807938999 is 99983970833.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33807938999 is a prime.

It is a super-2 number, since 2×33807938999² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33807938929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10703912 + ... + 10707069.

It is an arithmetic number, because the mean of its divisors is an integer number (8457337890).

Almost surely, 2^33807938999 is an apocalyptic number.

33807938999 is a deficient number, since it is larger than the sum of its proper divisors (21412561).

33807938999 is a wasteful number, since it uses less digits than its factorization.

33807938999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21412560.

The product of its (nonzero) digits is 79361856, while the sum is 68.

The spelling of 33807938999 in words is "thirty-three billion, eight hundred seven million, nine hundred thirty-eight thousand, nine hundred ninety-nine".