2139079289 has 4 divisors (see below), whose sum is σ = 2139301200. Its totient is φ = 2138857380.

The previous prime is 2139079277. The next prime is 2139079297. The reversal of 2139079289 is 9829709312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2139079289 - 2¹² = 2139075193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2139079249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95807 + ... + 116004.

It is an arithmetic number, because the mean of its divisors is an integer number (534825300).

Almost surely, 2^2139079289 is an apocalyptic number.

It is an amenable number.

2139079289 is a deficient number, since it is larger than the sum of its proper divisors (221911).

2139079289 is a wasteful number, since it uses less digits than its factorization.

2139079289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221910.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 2139079289 is about 46250.1815023466. The cubic root of 2139079289 is about 1288.4739057077.

The spelling of 2139079289 in words is "two billion, one hundred thirty-nine million, seventy-nine thousand, two hundred eighty-nine".