33139 has 4 divisors (see below), whose sum is σ = 34240. Its totient is φ = 32040.

The previous prime is 33119. The next prime is 33149. The reversal of 33139 is 93133.

It is a happy number.

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 33139 - 2⁵ = 33107 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (33119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504 + ... + 565.

It is an arithmetic number, because the mean of its divisors is an integer number (8560).

2³³¹³⁹ is an apocalyptic number.

33139 is a deficient number, since it is larger than the sum of its proper divisors (1101).

33139 is a wasteful number, since it uses less digits than its factorization.

33139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100.

The product of its digits is 243, while the sum is 19.

The square root of 33139 is about 182.0412041270. The cubic root of 33139 is about 32.1203152944.

Subtracting from 33139 its product of digits (243), we obtain a triangular number (32896 = T₂₅₆).

The spelling of 33139 in words is "thirty-three thousand, one hundred thirty-nine".