2779841 has 4 divisors (see below), whose sum is σ = 2847684. Its totient is φ = 2712000.

The previous prime is 2779811. The next prime is 2779859. The reversal of 2779841 is 1489772.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 633616 + 2146225 = 796^2 + 1465^2 .

It is a cyclic number.

It is not a de Polignac number, because 2779841 - 2¹⁴ = 2763457 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2779795 and 2779804.

It is not an unprimeable number, because it can be changed into a prime (2779811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33860 + ... + 33941.

It is an arithmetic number, because the mean of its divisors is an integer number (711921).

2^2779841 is an apocalyptic number.

It is an amenable number.

2779841 is a deficient number, since it is larger than the sum of its proper divisors (67843).

2779841 is an equidigital number, since it uses as much as digits as its factorization.

2779841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67842.

The product of its digits is 28224, while the sum is 38.

The square root of 2779841 is about 1667.2855184401. The cubic root of 2779841 is about 140.6069060506.

The spelling of 2779841 in words is "two million, seven hundred seventy-nine thousand, eight hundred forty-one".