2779449772 has 24 divisors (see below), whose sum is σ = 5311660032. Its totient is φ = 1262091600.

The previous prime is 2779449769. The next prime is 2779449773.

2779449772 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (2779449773) 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, 11733 + ... + 75475.

It is an arithmetic number, because the mean of its divisors is an integer number (221319168).

Almost surely, 2^2779449772 is an apocalyptic number.

2779449772 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2779449772 is a deficient number, since it is larger than the sum of its proper divisors (2532210260).

2779449772 is a wasteful number, since it uses less digits than its factorization.

2779449772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64749 (or 64747 counting only the distinct ones).

The product of its digits is 12446784, while the sum is 58.

The square root of 2779449772 is about 52720.4872132267. The cubic root of 2779449772 is about 1406.0030951749.

The spelling of 2779449772 in words is "two billion, seven hundred seventy-nine million, four hundred forty-nine thousand, seven hundred seventy-two".