33139967 has 8 divisors (see below), whose sum is σ = 37968000. Its totient is φ = 28335384.

The previous prime is 33139949. The next prime is 33139969. The reversal of 33139967 is 76993133.

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

It is not a de Polignac number, because 33139967 - 2²² = 28945663 is a prime.

It is a super-2 number, since 2×33139967² = 2196514825522178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33139969) 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 7 ways as a sum of consecutive naturals, for example, 2717 + ... + 8582.

It is an arithmetic number, because the mean of its divisors is an integer number (4746000).

Almost surely, 2^33139967 is an apocalyptic number.

33139967 is a deficient number, since it is larger than the sum of its proper divisors (4828033).

33139967 is a wasteful number, since it uses less digits than its factorization.

33139967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11725.

The product of its digits is 91854, while the sum is 41.

The square root of 33139967 is about 5756.7323196411. The cubic root of 33139967 is about 321.2062771625.

The spelling of 33139967 in words is "thirty-three million, one hundred thirty-nine thousand, nine hundred sixty-seven".