2774729 has 2 divisors, whose sum is σ = 2774730. Its totient is φ = 2774728.

The previous prime is 2774719. The next prime is 2774731. The reversal of 2774729 is 9274772.

2774729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2408704 + 366025 = 1552^2 + 605^2 .

It is a cyclic number.

It is not a de Polignac number, because 2774729 - 2⁴ = 2774713 is a prime.

Together with 2774731, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2774692 and 2774701.

It is not a weakly prime, because it can be changed into another prime (2774719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1387364 + 1387365.

It is an arithmetic number, because the mean of its divisors is an integer number (1387365).

2^2774729 is an apocalyptic number.

It is an amenable number.

2774729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2774729 is an equidigital number, since it uses as much as digits as its factorization.

2774729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49392, while the sum is 38.

The square root of 2774729 is about 1665.7517822293. The cubic root of 2774729 is about 140.5206632814.

The spelling of 2774729 in words is "two million, seven hundred seventy-four thousand, seven hundred twenty-nine".