2782139 has 2 divisors, whose sum is σ = 2782140. Its totient is φ = 2782138.

The previous prime is 2782127. The next prime is 2782147. The reversal of 2782139 is 9312872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2782139 - 2⁴ = 2782123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2782159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1391069 + 1391070.

It is an arithmetic number, because the mean of its divisors is an integer number (1391070).

2^2782139 is an apocalyptic number.

2782139 is a deficient number, since it is larger than the sum of its proper divisors (1).

2782139 is an equidigital number, since it uses as much as digits as its factorization.

2782139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 2782139 is about 1667.9745201891. The cubic root of 2782139 is about 140.6456403613.

The spelling of 2782139 in words is "two million, seven hundred eighty-two thousand, one hundred thirty-nine".