33898139 has 16 divisors (see below), whose sum is σ = 38085120. Its totient is φ = 29907360.

The previous prime is 33898133. The next prime is 33898157. The reversal of 33898139 is 93189833.

33898139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 33898139 - 2²⁰ = 32849563 is a prime.

It is a super-2 number, since 2×33898139² = 2298167655326642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33898139.

It is not an unprimeable number, because it can be changed into a prime (33898133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89252 + ... + 89630.

It is an arithmetic number, because the mean of its divisors is an integer number (2380320).

Almost surely, 2^33898139 is an apocalyptic number.

33898139 is a deficient number, since it is larger than the sum of its proper divisors (4186981).

33898139 is a wasteful number, since it uses less digits than its factorization.

33898139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610.

The product of its digits is 139968, while the sum is 44.

The square root of 33898139 is about 5822.2108343824. The cubic root of 33898139 is about 323.6373368065.

The spelling of 33898139 in words is "thirty-three million, eight hundred ninety-eight thousand, one hundred thirty-nine".