2639206339 has 8 divisors (see below), whose sum is σ = 3290439168. Its totient is φ = 2056524360.

The previous prime is 2639206333. The next prime is 2639206373. The reversal of 2639206339 is 9336029362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2639206339 - 2⁵ = 2639206307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2639206295 and 2639206304.

It is not an unprimeable number, because it can be changed into a prime (2639206333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17137627 + ... + 17137780.

It is an arithmetic number, because the mean of its divisors is an integer number (411304896).

Almost surely, 2^2639206339 is an apocalyptic number.

2639206339 is a deficient number, since it is larger than the sum of its proper divisors (651232829).

2639206339 is a wasteful number, since it uses less digits than its factorization.

2639206339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34275425.

The product of its (nonzero) digits is 314928, while the sum is 43.

The square root of 2639206339 is about 51373.2064309792. The cubic root of 2639206339 is about 1381.9461338026.

The spelling of 2639206339 in words is "two billion, six hundred thirty-nine million, two hundred six thousand, three hundred thirty-nine".