2779879338 has 80 divisors (see below), whose sum is σ = 6773902344. Its totient is φ = 848517120.

The previous prime is 2779879331. The next prime is 2779879369. The reversal of 2779879338 is 8339789772.

It can be written as a sum of positive squares in 4 ways, for example, as 2737068489 + 42810849 = 52317^2 + 6543^2 .

It is not an unprimeable number, because it can be changed into a prime (2779879331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 88258 + ... + 115538.

Almost surely, 2^2779879338 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2779879338, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3386951172).

2779879338 is an abundant number, since it is smaller than the sum of its proper divisors (3994023006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2779879338 is a wasteful number, since it uses less digits than its factorization.

2779879338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27349 (or 27340 counting only the distinct ones).

The product of its digits is 32006016, while the sum is 63.

The square root of 2779879338 is about 52724.5610508044. The cubic root of 2779879338 is about 1406.0755243801.

The spelling of 2779879338 in words is "two billion, seven hundred seventy-nine million, eight hundred seventy-nine thousand, three hundred thirty-eight".