83138289 has 16 divisors (see below), whose sum is σ = 120013824. Its totient is φ = 50889600.

The previous prime is 83138287. The next prime is 83138309. The reversal of 83138289 is 98283138.

It is not a de Polignac number, because 83138289 - 2¹ = 83138287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83138289.

It is not an unprimeable number, because it can be changed into a prime (83138287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1869 + ... + 13029.

It is an arithmetic number, because the mean of its divisors is an integer number (7500864).

Almost surely, 2^83138289 is an apocalyptic number.

It is an amenable number.

83138289 is a deficient number, since it is larger than the sum of its proper divisors (36875535).

83138289 is a wasteful number, since it uses less digits than its factorization.

83138289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11368.

The product of its digits is 82944, while the sum is 42.

The square root of 83138289 is about 9118.0200153323. The cubic root of 83138289 is about 436.4491923192.

The spelling of 83138289 in words is "eighty-three million, one hundred thirty-eight thousand, two hundred eighty-nine".