2779411321 has 2 divisors, whose sum is σ = 2779411322. Its totient is φ = 2779411320.

The previous prime is 2779411291. The next prime is 2779411337. The reversal of 2779411321 is 1231149772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2645662096 + 133749225 = 51436^2 + 11565^2 .

It is a cyclic number.

It is not a de Polignac number, because 2779411321 - 2¹¹ = 2779409273 is a prime.

It is not a weakly prime, because it can be changed into another prime (2779411421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1389705660 + 1389705661.

It is an arithmetic number, because the mean of its divisors is an integer number (1389705661).

Almost surely, 2^2779411321 is an apocalyptic number.

It is an amenable number.

2779411321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2779411321 is an equidigital number, since it uses as much as digits as its factorization.

2779411321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 37.

The square root of 2779411321 is about 52720.1225434843. The cubic root of 2779411321 is about 1405.9966115806.

The spelling of 2779411321 in words is "two billion, seven hundred seventy-nine million, four hundred eleven thousand, three hundred twenty-one".