33986690839 has 4 divisors (see below), whose sum is σ = 34815634560. Its totient is φ = 33157747120.

The previous prime is 33986690791. The next prime is 33986690863. The reversal of 33986690839 is 93809668933.

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

It is a cyclic number.

It is not a de Polignac number, because 33986690839 - 2⁹ = 33986690327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33986690039) 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, 414471799 + ... + 414471880.

It is an arithmetic number, because the mean of its divisors is an integer number (8703908640).

Almost surely, 2^33986690839 is an apocalyptic number.

33986690839 is a deficient number, since it is larger than the sum of its proper divisors (828943721).

33986690839 is an equidigital number, since it uses as much as digits as its factorization.

33986690839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828943720.

The product of its (nonzero) digits is 45349632, while the sum is 64.

The spelling of 33986690839 in words is "thirty-three billion, nine hundred eighty-six million, six hundred ninety thousand, eight hundred thirty-nine".