83139133 has 12 divisors (see below), whose sum is σ = 105505632. Its totient is φ = 64783320.

The previous prime is 83139127. The next prime is 83139149. The reversal of 83139133 is 33193138.

It is not a de Polignac number, because 83139133 - 2⁵ = 83139101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83139095 and 83139104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83139233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76585 + ... + 77662.

It is an arithmetic number, because the mean of its divisors is an integer number (8792136).

Almost surely, 2^83139133 is an apocalyptic number.

It is an amenable number.

83139133 is a deficient number, since it is larger than the sum of its proper divisors (22366499).

83139133 is a wasteful number, since it uses less digits than its factorization.

83139133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154272 (or 154265 counting only the distinct ones).

The product of its digits is 5832, while the sum is 31.

The square root of 83139133 is about 9118.0662971926. The cubic root of 83139133 is about 436.4506692234.

The spelling of 83139133 in words is "eighty-three million, one hundred thirty-nine thousand, one hundred thirty-three".