2779139068 has 24 divisors (see below), whose sum is σ = 4964425200. Its totient is φ = 1360908288.

The previous prime is 2779139047. The next prime is 2779139113. The reversal of 2779139068 is 8609319772.

It is a super-2 number, since 2×2779139068² = 15447227918567817248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41596 + ... + 85372.

It is an arithmetic number, because the mean of its divisors is an integer number (206851050).

Almost surely, 2^2779139068 is an apocalyptic number.

It is an amenable number.

2779139068 is a deficient number, since it is larger than the sum of its proper divisors (2185286132).

2779139068 is a wasteful number, since it uses less digits than its factorization.

2779139068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44109 (or 44107 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 52.

The square root of 2779139068 is about 52717.5404206228. The cubic root of 2779139068 is about 1405.9507026631.

The spelling of 2779139068 in words is "two billion, seven hundred seventy-nine million, one hundred thirty-nine thousand, sixty-eight".