2139083689 has 4 divisors (see below), whose sum is σ = 2158708420. Its totient is φ = 2119458960.

The previous prime is 2139083671. The next prime is 2139083801. The reversal of 2139083689 is 9863809312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1246090000 + 892993689 = 35300^2 + 29883^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2139083689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2139083489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9812202 + ... + 9812419.

It is an arithmetic number, because the mean of its divisors is an integer number (539677105).

Almost surely, 2^2139083689 is an apocalyptic number.

It is an amenable number.

2139083689 is a deficient number, since it is larger than the sum of its proper divisors (19624731).

2139083689 is a wasteful number, since it uses less digits than its factorization.

2139083689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19624730.

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 2139083689 is about 46250.2290697030. The cubic root of 2139083689 is about 1288.4747891534.

The spelling of 2139083689 in words is "two billion, one hundred thirty-nine million, eighty-three thousand, six hundred eighty-nine".