2779873 has 2 divisors, whose sum is σ = 2779874. Its totient is φ = 2779872.

The previous prime is 2779859. The next prime is 2779877. The reversal of 2779873 is 3789772.

2779873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2166784 + 613089 = 1472^2 + 783^2 .

It is a cyclic number.

It is not a de Polignac number, because 2779873 - 2¹⁷ = 2648801 is a prime.

It is a super-2 number, since 2×2779873² = 15455387792258, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2²¹ + 7⁵ + 7⁵ + 9 + 8 + 7⁶ + 3¹² .

It is not a weakly prime, because it can be changed into another prime (2779877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1389936 + 1389937.

It is an arithmetic number, because the mean of its divisors is an integer number (1389937).

2^2779873 is an apocalyptic number.

It is an amenable number.

2779873 is a deficient number, since it is larger than the sum of its proper divisors (1).

2779873 is an equidigital number, since it uses as much as digits as its factorization.

2779873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 43.

The square root of 2779873 is about 1667.2951148492. The cubic root of 2779873 is about 140.6074455783.

The spelling of 2779873 in words is "two million, seven hundred seventy-nine thousand, eight hundred seventy-three".