2783873 has 2 divisors, whose sum is σ = 2783874. Its totient is φ = 2783872.

The previous prime is 2783849. The next prime is 2783887. The reversal of 2783873 is 3783872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2155024 + 628849 = 1468^2 + 793^2 .

It is a cyclic number.

It is not a de Polignac number, because 2783873 - 2¹⁶ = 2718337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2783173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1391936 + 1391937.

It is an arithmetic number, because the mean of its divisors is an integer number (1391937).

2^2783873 is an apocalyptic number.

It is an amenable number.

2783873 is a deficient number, since it is larger than the sum of its proper divisors (1).

2783873 is an equidigital number, since it uses as much as digits as its factorization.

2783873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 38.

The square root of 2783873 is about 1668.4942313355. The cubic root of 2783873 is about 140.6748539617.

Subtracting 2783873 from its reverse (3783872), we obtain a palindrome (999999).

The spelling of 2783873 in words is "two million, seven hundred eighty-three thousand, eight hundred seventy-three".