2772839 has 2 divisors, whose sum is σ = 2772840. Its totient is φ = 2772838.

The previous prime is 2772829. The next prime is 2772881. The reversal of 2772839 is 9382772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2772839 - 2²⁰ = 1724263 is a prime.

It is a super-2 number, since 2×2772839² = 15377272239842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2772829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1386419 + 1386420.

It is an arithmetic number, because the mean of its divisors is an integer number (1386420).

2^2772839 is an apocalyptic number.

2772839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2772839 is an equidigital number, since it uses as much as digits as its factorization.

2772839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 38.

The square root of 2772839 is about 1665.1843741760. The cubic root of 2772839 is about 140.4887509304.

The spelling of 2772839 in words is "two million, seven hundred seventy-two thousand, eight hundred thirty-nine".