2782939 has 2 divisors, whose sum is σ = 2782940. Its totient is φ = 2782938.

The previous prime is 2782937. The next prime is 2782973. The reversal of 2782939 is 9392872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2782939 - 2¹ = 2782937 is a prime.

Together with 2782937, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2782937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1391469 + 1391470.

It is an arithmetic number, because the mean of its divisors is an integer number (1391470).

2^2782939 is an apocalyptic number.

2782939 is a deficient number, since it is larger than the sum of its proper divisors (1).

2782939 is an equidigital number, since it uses as much as digits as its factorization.

2782939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 2782939 is about 1668.2143147689. The cubic root of 2782939 is about 140.6591198854.

It can be divided in two parts, 2782 and 939, that added together give a square (3721 = 61²).

The spelling of 2782939 in words is "two million, seven hundred eighty-two thousand, nine hundred thirty-nine".